query: when did the first contact lenses come out

pos: Contact lens While working in Zürich, he described fabricating afocal scleral contact shells, which rested on the less sensitive rim of tissue around the cornea, and experimentally fitting them; initially on rabbits, then on himself, and lastly on a small group of volunteers. These lenses were made from heavy blown glass and were in diameter. Fick filled the empty space between cornea and glass with a dextrose solution. He published his work, ""Contactbrille"", in the journal "Archiv für Augenheilkunde" in March 1888. Fick's lens was large and unwieldy, and could be worn only for a couple of hours at a time. August

pos: Contact lens Müller in Kiel, Germany, corrected his own severe myopia with a more convenient blown-glass scleral contact lens of his own manufacture in 1888. Also in 1887, Louis J. Girard invented a similar scleral form of contact lens. Blown-glass scleral lenses remained the only form of contact lens until the 1930s when Perspex/Plexiglas was developed, allowing plastic scleral lenses to be manufactured for the first time. In 1936, optometrist William Feinbloom introduced plastic in lenses, making them lighter and more convenient. These lenses were a combination of glass and plastic. In 1939, Hungarian optometrist Dr István Györffy produced first fully plastic

neg: Raymond Berry was perpetuated by an overzealous information director with the Colts when Berry tried to compensate for his condition by putting something in his shoe during training camp. Due to his poor eyesight, Berry wore contact lenses when he played. Because the lenses would often slip when he did rapid eye movements toward the ball, he tried many different lenses, which led sportswriters to believe he must have had major eye problems. "I tried all kinds of lenses till we got what we wanted," he said. "I even had tinted lenses for sunny days, so I could watch the ball come

neg: Contact lens D. C, Lyndon Baines Johnson became the first President in the history of these United States to appear in public wearing contact lenses, under the supervision of Dr. Alan Isen, who developed the first commercially viable soft-contact lenses in the United states. Early corneal lenses of the 1950s and '60s were relatively expensive and fragile, resulting in the development of a market for contact lens insurance. Replacement Lens Insurance, Inc. (now known as RLI Corp.) phased out its original flagship product in 1994 after contact lenses became more affordable and easier to replace. One major disadvantage of PMMA lenses is

neg: Fusarium solani of fungal keratitis occur most frequently during harvest season as a result of corneal trauma from dust or plant material. Fungal spores come into contact with the damaged cornea and grow. Without treatment, the hyphae can grow into the cornea and into the anterior chamber of the eye. "F. solani" is also a major cause of fungal keratitis in HIV positive patients in Africa. "F. solani" was implicated in cases of fungal keratitis involving the Bausch and Lomb ReNu contact lens solution. Some strains of "F. solani" can produce a biofilm on soft contact lenses. However, when lenses are cleaned

neg: Tears oxygen needed is higher than normal, and contact lenses stop oxygen from entering the eye. Eyes with thin tear film will dry out while wearing contact lenses. Special eye drops are available for contact lens wearers. Certain types of contact lenses are designed to let more oxygen through to the eye. The lacrimal glands secrete lacrimal fluid, which flows through the main excretory ducts into the space between the eyeball and lids. When the eyes blink, the lacrimal fluid is spread across the surface of the eye. Lacrimal fluid gathers in the lacrimal lake, and is drawn into the puncta

neg: Shooting of Yoshihiro Hattori inferred that he and Hattori had come to the wrong house. They were preparing to return to their car when Rodney Peairs opened the carport door, armed with a .44 Magnum revolver. Hattori stepped back towards Peairs, saying, "We're here for the party." Peairs pointed the gun at him and yelled, "Freeze!" Haymaker had caught sight of the firearm and shouted a warning after Hattori, but Hattori had limited English and was not wearing his contact lenses that evening, and it is possible that he did not understand Peairs' command to "freeze", did not see his weapon, or might even

neg: Contact lens research on the issue of "compliance" or the length of time a user can safely wear a lens beyond its stated use. The introduction of multipurpose solutions and daily disposable lenses have helped to alleviate some of the problems observed from inadequate cleaning but new methods of combating microbial contamination are currently being developed. A silver-impregnated lens case has been developed which helps to eradicate any potentially contaminating microbes that come in contact with the lens case. Additionally, a number of antimicrobial agents are being developed that have been embedded into contact lenses themselves. Lenses with covalently attached selenium molecules

neg: Contact lens hands using towels or tissues before handling contact lenses can transfer lint (fluff) to the hands and, subsequently, to the lenses, causing irritation upon insertion. Towels, unless freshly laundered on high temperature wash, are frequently contaminated with large quantities of bacteria and, as such, should be avoided when handling lenses. Dust, lint and other debris may collect on the outside of contact lenses. Again, hand contact with this material, before handling contact lenses, may transfer it to the lenses themselves. Rinsing the case under a source of clean running water, before opening it, can help alleviate this problem. Next the

neg: Orthokeratology corneal ulcers when fit with Paragon CRT contact lenses, which were worn nightly. Each patient presented with a bacterial corneal ulcer after wearing CRT contact lenses for less than 6 months. In the first patient, "Pseudomonas aeruginosa" was identified as the causative organism. In the second patient, "Haemophilus influenza" was cultured from the ulcer. Both patients were treated with antibiotics, resulting in a rapid resolution of the corneal ulcers and preservation of vision. The writers conclude that "Paragon CRT lenses have been approved for use in patients of all ages. When used in children, these lenses may present unique problems.

neg: Circle contact lens Circle contact lens A circle contact lens, also known as a big eye contact lens and circle lens, is a cosmetic (non-corrective and decorative) contact lens that makes the eye's iris appear larger. It has become a trend throughout East, South and Southeast Asia and is largely produced in Japan, South Korea and China. Circle lenses make one's eyes appear larger and come in a variety of colors and effects. They have been around since 2004 and are very popular in countries such as South Korea, Japan, Taiwan and China. The diameter of regular contact lenses that are sold in

neg: Contact lens to fold then fall out, without pinching and thereby damaging it. If these techniques are used with a rigid lens, it may scratch the cornea. There are also small tools specifically for removing lenses. Usually made of flexible plastic, they resemble small tweezers, or plungers that suction onto the front of the lens. Typically these tools are used only with rigid lenses. Extreme care must be exercised when using mechanical tools or fingernails to insert or remove contact lenses. Lens care varies depending on material and wear schedule. Daily disposables are discarded after a single use and thus require no

neg: Ida Mann her friend, Davidine Pullinger, and the biochemist, Antoinette Pirie, she worked out the entire pathology of mustard gas keratitis, which afflicted soldiers from the First World War some ten to fifteen years after they had survived a mustard gas attack. Although the team did not find a cure, they were able to alleviate symptoms through the use of contact lenses. During the war, honorary staff were not allowed to resign from their posts at civilian hospitals. Therefore, when Mann applied for, and was appointed to, the post of Margaret Ogilvy Reader in Ophthalmology at the University of Oxford in 1941,

neg: Contact lens done by weighting the bottom of the lens or by using other physical characteristics to rotate the lens back into position. Some toric contact lenses have marks or etchings that can assist the eye doctor or the user in fitting the lens. The first disposable toric contact lenses were introduced in 2000 by Vistakon. Correction of presbyopia (a need for a reading prescription different from the prescription needed for distance) presents an additional challenge in the fitting of contact lenses. Two main strategies exist: multifocal lenses and monovision. Multifocal contact lenses (e.g. bifocals or progressives) are comparable to spectacles with

neg: Contact lens schedule. Single use lenses (called 1-day or daily disposables) are discarded after one use. Because they do not have to stand up to the wear and tear of repeated uses, these lenses can be made thinner and lighter, greatly improving their comfort. Lenses replaced frequently gather fewer deposits of allergens and germs, making these lenses preferable for patients with ocular allergies or for those who are prone to infection. Single-use lenses are also useful for people who wear contact lenses infrequently, or when losing a lens is likely or not easily replaced (such as when on vacation). They are also

neg: Irvin Borish was named the “Borish Center for Ophthalmic Research”. He was invited to speak to the freshman class every year from 1982 until 2000, telling them the history of optometry and how he got involved and changed it. When contact lenses were becoming popular, Borish became an early adopter, prescribing them to several of his clients and family. In particular he was interested in the bifocal contact lenses. He devised methods and processes to create bifocal contact lenses for optimum performance. He established a lab in association with Emil Faris and Ronald Ulmer to produce quality lenses called the Indiana Contact

neg: Aniseikonia curve, vertex distance, and center thickness. Contact lenses may also provide a better optical magnification to reduce the difference in image size. The difference in magnification can also be eliminated by a combination of contact lenses and glasses (creating a weak telescope system). The optimum design solution will depend on different parameters like cost, cosmetic implications, and if the patient can tolerate wearing a contact lens. Note however that before the optics can be designed, first the aniseikonia should be known=measured. When the image disparity is astigmatic (cylindrical) and not uniform, images can appear wider, taller, or diagonally different. When

neg: Augmented reality for wireless communication. The first contact lens display was reported in 1999, then 11 years later in 2010-2011. Another version of contact lenses, in development for the U.S. military, is designed to function with AR spectacles, allowing soldiers to focus on close-to-the-eye AR images on the spectacles and distant real world objects at the same time. The futuristic short film "Sight" features contact lens-like augmented reality devices. Many scientists have been working on contact lenses capable of many different technological feats. The company Samsung has been working on a contact lens as well. This lens, when finished, is meant to

neg: Contact lens full comfort is achieved). Polymers from which soft lenses are manufactured improved over the next 25 years, primarily in terms of increasing oxygen permeability, by varying the ingredients. In 1972, British optometrist Rishi Agarwal was the first to suggest disposable soft contact lenses. In 1998, the first silicone hydrogel contact lenses were released by Ciba Vision in Mexico. These new materials encapsulated the benefits of silicone—which has extremely high oxygen permeability—with the comfort and clinical performance of the conventional hydrogels that had been used for the previous 30 years. These contact lenses were initially advocated primarily for extended (overnight) wear,

neg: Contact lens 2015. , the average age of contact lens wearers globally was 31 years old, and two-thirds of wearers were female. People choose to wear contact lenses for many reasons. Aesthetics and cosmetics are the main motivating factors for people who want to avoid wearing glasses or to change the appearance of their eyes. Others wear contact lenses for functional or optical reasons. When compared with spectacles, contact lenses typically provide better peripheral vision, and do not collect moisture (from rain, snow, condensation etc.) or perspiration. This can make them preferable for sports and other outdoor activities. Contact lens wearers can

neg: Orthokeratology patients. In addition, Ortho-K is broadly not 'new' from a safety viewpoint; contact lens safety generally speaking is considered to be well understood. However it is important, as with all contact lenses, to maintain good cleaning and hygiene discipline. Rigid lenses are generally considered to be not as comfortable as soft lenses, but Ortho-K is claimed to avoid the feeling during waking hours of the eyelids moving over the lens edges while blinking. When Ortho-K lenses are worn, the eyes are closed for sleep, although the same issues that accompany wearing contact lenses during sleep (rapid eye movements and lower

neg: America's Next Top Model (season 14) of the girls did well, except Tatianna, whose playful commercial allowed her personality to shine through, and she won a CoverGirl shoot for "Seventeen" Magazine and CoverGirl.com. The models posed as vampires in a bloody bathtub at the photo shoot. White-out contact lenses that they had to wear left them virtually blind. Although she found trouble and pain while putting on her lenses, Brenda did quite well at the shoot with her simple but haunting and sexy pose. The judges slated Anslee for giving excuses for her poor performances and in the end it was Simone and Anslee who landed

neg: David Rocastle and contact lenses had to be used. According to his teammate Martin Keown "They couldn't work out why Rocastle was running around dribbling with his head down. So they took him to the halfway line and said: 'Can you see the goal?' and he couldn't. His eyesight was terrible. They sorted him out with contact lenses and his career took off." He made his debut against Newcastle United and made 26 league appearances that season, scoring once as Arsenal finished seventh in the league. He remained a regular player in the first team following the departure of Don Howe and

neg: Contact lens Many complications arise when contact lenses are worn not as prescribed (improper wear schedule or lens replacement). Sleeping in lenses not designed or approved for extended wear is a common cause of complications. Many people go too long before replacing their contacts, wearing lenses designed for 1, 14, or 30 days of wear for multiple months or years. While this does save on the cost of lenses, it risks permanent damage to the eye and even loss of sight. One of the major factors that causes complications is that the contact lens is an oxygen barrier. The cornea needs a

neg: Contact lens lenses. Later, in 1940, German optometrist Heinrich Wöhlk produced fully plastic lenses too, based on experiments performed during the 1930s. In 1949, the first "corneal" lenses were developed. These were much smaller than the original scleral lenses, as they sat only on the cornea rather than across all of the visible ocular surface, and could be worn up to sixteen hours a day. Polymethyl methacrylate (PMMA) corneal lenses became the first contact lenses to have mass appeal through the 1960s, as lens designs became more sophisticated with improving manufacturing technology. On Oct. 18, 1964, in a television studio in Washington,

neg: Optics and vision a greater index of refraction than most types of glass; this is useful in the making of corrective lenses shaped to correct various vision abnormalities such as myopia, allowing thinner lenses for a given prescription. A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye. Modern soft contact lenses were invented by the Czech chemist Otto Wichterle and his assistant Drahoslav Lím, who also invented the first gel used for their production. Contact lenses usually serve the same corrective purpose as glasses, but are lightweight and

neg: Fungal contamination of contact lenses methods "to control inflammatory tissue damage" is being sought. Immediate treatment for fungal contaminated contact lenses is to discard the contact lenses in question and replace with brand new contact lenses. It is also recommended to replace the contact lens case as it may be a pathogenic source. Patients with eye infections caused by contaminated contact lenses should seek immediate help from a certified professional. Fungal contamination of contact lenses Microbial corneal infection is the most serious and "most common vision threatening" complication of contact lens wear, which is believed to be strongly associated with contact lens cases. Such infections

neg: Drahoslav Lím Drahoslav Lím Drahoslav Lím (born September 30, 1925 in Czechoslovakia; died August 22, 2003 in San Diego, California) was a Czech chemist. He invented polyhydroxyethylmethacrylate, the synthetic material used for soft contact lenses (hydrogel). Lím worked as a member of the team of Otto Wichterle (the inventor of soft contact lenses) and in 1955, he came up with poly(hydroethyl-acrylate), the material later used for the lenses. This work was later published in Nature and was the subject of US patents. During 1970 to 1974 he worked in Palo Alto, California, improving contact lenses materials and technology. When he returned to

neg: Bausch & Lomb In 2012 an affordable line of daily disposable contact lenses were launched under the same brand name for both single vision and for users with presbyopia. They were first introduced in Italy and quickly followed by the United Kingdom and the Nordics. In 2015 they were approved for the US market. Biotrue one day contact lenses are made from a material called HyperGel and manufactured in the country of Ireland. On April 11, 2006, Bausch & Lomb stopped shipments of its ReNu with MoistureLoc contact lens solution when the Centers for Disease Control and Prevention (CDC) announced there was a

neg: August Müller (inventor) the eye, but he did however lay the groundwork for later researchers and his ideas and recommendations on fit, tear flow and rounded edges still form the basis for contact lens fitting today. In 1932, Müller donated three lenses to the German Museum in Munich. These were the same lenses that he had discussed in his thesis. August Müller (inventor) August Müller (1864 – 1949), born in Mönchengladbach, was a medical student at the University of Kiel, Germany, and a pioneer in the manufacture of contact lenses. In 1889, he presented at the university his doctoral thesis titled "Eyeglasses and

neg: Circle contact lens under both photopic and mesopic conditions. Increases in higher-order aberrations are responsible for decreased contrast sensitivity under the photopic condition. Tinted contact lens wearers should be sufficiently informed about the possible reduction in optical quality of the eye and quality of vision." However, a meta-analysis reported that cosmetically tinted lenses appear to be safe when properly prescribed by an eye care professional and when used correctly. Concerns with these lenses in the United States arise from people buying lenses without consulting their optometrists, which could result in lenses that do not fit the individual's eyes properly. In the United States

neg: Keratoconus Some trial-and-error fitting may prove necessary. Traditionally, contact lenses for keratoconus have been the 'hard' or RGP variety, although manufacturers have also produced specialized 'soft' or hydrophilic lenses and, most recently, silicone hydrogel lenses. A soft lens has a tendency to conform to the conical shape of the cornea, thus diminishing its effect. To counter this, hybrid lenses have been developed which are hard in the centre and encompassed by a soft skirt. However, soft or earlier generation hybrid lenses did not prove effective for every person. Early generation lenses have been discontinued. The fourth generation of hybrid lens technology

neg: Star Trek: First Contact framing. While much of the footage was shot at 50–70 mm focal lengths using anamorphic lenses, 14 mm spherical lenses were used for Borg's-eye-view shots. Leonetti preferred shooting with long lenses to provide a more claustrophobic feel, but made sure the length did not flatten the image. Handheld cameras were used for battle sequences so that viewers were brought into the action and the camera could follow the movements of the actors. The Borg scenes were received positively by test screening audiences, so once the rest of the film had been completed, a Borg assimilation scene of the "Enterprise" crew

neg: Augmented reality Consumer Technology and Markets at Gartner, said that "Out of all the head-mounted displays that I've tried in the past couple of decades, the HoloLens was the best in its class." HoloLens was designed to be a general purpose immersive device. First impressions were generally that such a device might be more useful than a small off to the side display like Google Glass offered with packaged productivity oriented applications Contact lenses that display AR imaging are in development. These bionic contact lenses might contain the elements for display embedded into the lens including integrated circuitry, LEDs and an antenna

neg: Gille de Vlieg first made contact with Greg Thulare, an organiser for COSAS in Tembisa. She was slowly introduced to the politics of the UDF and ANC during this time. One of her responsibilities at Black Sash was to work with rural communities which were threatened with removal to the homelands, and she soon became interested in taking photos. When Paul Weinberg asked her to join Afrapix, she replied, "Okay, I will come to work for Afrapix, but I'm not working as a secretary, I want to be a photographer." She had a camera and a couple of lenses but knew very little

neg: Effects of long-term contact lens wear on the cornea or thick hydrogel contact lenses have been found to cause corneal warpage (shape distortion). There is some evidence to show that rigid gas permeable contact lenses are capable of slowing myopic progression after long-term wear. This same effect was not found in patients who had worn soft contact lenses for an extended period of time. Greater corneal steepening was found in patients wearing soft contact lenses than in patients wearing rigid gas permeable contact lenses, suggesting that the latter may slow the progression of myopia by flattening the cornea. Corneal sensitivity is significantly diminished after extended contact lens wear (five

neg: Contact lens soon as possible by an eye doctor to rule out potentially serious complications. Removing contact lenses incorrectly could result in damage to the lens and injury to the eye so certain precautions must be taken. Rigid contact lenses can best be removed by pulling the eyelid tight and then blinking, whereupon the lens drops out. With one finger on the outer corner of the eyelids, or lateral canthus, the person stretches the eyelids towards the ear; the increased tension of the eyelid margins against the edge of lens allows the blink to break the capillary action that adheres the lens

neg: Contact lens 1959. In 1965, National Patent Development Corporation (NPDC) bought the American rights to produce the lenses and then sublicensed the rights to Bausch & Lomb, which started to manufacture them in the United States. The Czech scientists' work led to the launch of the first soft (hydrogel) contact lenses in some countries in the 1960s and the first approval of the Soflens material by the US Food and Drug Administration (FDA) in 1971. These soft lenses were soon prescribed more often than rigid ones, due to the immediate and much greater comfort (rigid lenses require a period of adaptation before

neg: Contact lens determine if the resulting lens will be a "daily disposable" or one recommended for two or four week replacement. However, sometimes manufacturers use absolutely identical lenses and just repackage them with different labels. Typically, soft contact lenses are mass-produced, while rigids are custom-made to exact specifications for the individual patient. Many companies make contact lenses. In the United States, there are five major manufacturers: The parameters specified in a contact lens prescription may include: Prescriptions for contact lenses and glasses may be similar, but are not interchangeable. Prescribing of contact lenses is usually restricted to various combinations of ophthalmologists, optometrists

neg: Killing Birds Orleans. It was the first time a "Zombi" film had been shot in the United States since Lucio Fulci's "Zombi 2". The film was shot in rural swamps outside of New Orleans with certain scenes being shot in Fairview-Riverside State Park. The film "was shot with sync sound and no overdubbing". Robert Vaughn was originally supposed to wear blue contact lenses and his eyes were to be removed via chroma key in post-production; however, the contact lenses proved too painful and they kept falling out. Joe D'Amato compromised on a crude prosthetic and dark glasses. Producer Joe D'Amato wanted Michele

neg: Polyhydroxyethylmethacrylate implant. Wichterle thought pHEMA might be a suitable material for a contact lens and gained his first patent for soft contact lenses. By late 1961, he succeeded in producing the first four pHEMA hydrogel contact lenses on a home-made apparatus. Copolymers of pHEMA are still widely used today. Poly-HEMA functions as a hydrogel by rotating around its central carbon. In air, the non-polar methyl side turns outward, making the material brittle and easy to grind into the correct lens shape. In water, the polar hydroxyethyl side turns outward and the material becomes flexible. Pure pHEMA yields lenses that are too

neg: Corneal neovascularization result. The desired results from medical therapy may not always occur, ergo an invasive procedure may be needed to prevent further decrease in corneal avascularity. For contact lenses related hypoxia, ceasing the use of contact lenses is the first step until corneal neovascularization is addressed by a physician. Modern rigid gas permeable and silicon hydrogel contact lenses have a much higher level of oxygen transmissibility, making them effective alternatives to help prevent corneal neovascularization. Topical administration of steroids and non-steroid anti-inflammatory drugs are first-line treatment for individuals with CNV. The administration of steroids can increase the risk of infection, glaucoma,

neg: Intraocular lens IOL is essentially the same as cataract surgery with a conventional IOL. Like toric contact lenses, toric IOLs have different powers in different meridians of the lens, and they must be positioned on the correct meridian to reverse the preexisting astigmatism. If the toric IOL is not on the correct meridian, it may need to be repositioned in a second procedure. In the United States, a new category of intraocular lenses was opened with the approval by the Food and Drug Administration in 2003 of multifocal and accommodating lenses. These come at an additional cost to the recipient beyond what

neg: Corneal abrasion Topical antibiotics are used to prevent concomitant infections, which result in slower healing of corneal abrasions. Ointments are considered the first-line treatment, as they are more lubricating than drops. If the person uses contact lenses, an antibiotic with anti-pseudomonal activity is preferred (ciprofloxacin, gentamycin or ofloxacin), and the use of contact lenses should be discontinued until the abrasion has healed and the antibiotic treatment has ended. This is because contact lens wearers are often colonized with "Pseudomonas aeruginosa", which may cause corneal perforations and subsequent permanent vision loss. If the mechanism of injury involves contact lenses, fingernails or organic/ plant

neg: Contact lens Contact lens A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye. Contact lenses are considered medical devices and can be worn to correct vision, or for cosmetic or therapeutic reasons. In 2004, it was estimated that 125 million people worldwide use contact lenses, including 28 to 38 million in the United States. In 2010, the worldwide market for contact lenses was estimated at $6.1 billion, while the US soft lens market was estimated at $2.1 billion. Multiple analysts estimated that the global market for contact lenses would reach $11.7 billion by

neg: Effects of long-term contact lens wear on the cornea had worn contact lenses for approximately five years or more, a 30 to 50 μm reduction in central and peripheral corneal thickness has been recorded. Furthermore, the reduction was more pronounced in patients wearing hard contact lenses than in patients wearing soft contact lenses. Increased endothelial polymegethism is also found in long-term wearers of rigid gas permeable lenses as soon as one week after contact lens wear begins. This change is indicated by significant increases in Max/Min cell size ratio in contact lens wearers. Endothelial pleiomorphism is another factor that arises from long-term use of rigid gas permeable lenses; significant

neg: Contact lens that of "Staphylococcus epidermidis". This might partly explain why "Pseudomonas" infections are the most predominant. However, another study conducted with worn and unworn silicone and conventional hydrogel contact lenses showed that worn silicone contact lenses were less prone to "Staphylococcus epidermidis" colonization than conventional hydrogel lenses. Another important area of contact lens research deals with patient compliance. Compliance is a major issue pertaining to the use of contact lenses because patient noncompliance often leads to contamination of the lens, storage case, or both. However, careful users can extend the wear of lenses through proper handling: there is, unfortunately, no disinterested

neg: Contact lens has been granted FDA approval for use in the United States. Magnification is another area being researched for future contact lens applications. Embedding of telescopic lenses and electronic components suggests that future uses of contact lenses may become extremely diverse. However, there are still barriers that prevent transition of these technologies, from research and development to practical application and commercial availability. A cosmetic contact lens is designed to change the appearance of the eye. These lenses may also correct refractive error. Although many brands of contact lenses are lightly tinted to make them easier to handle, cosmetic lenses worn to

neg: Circle contact lens the United States are on average 14mm–16mm. Similar to the diameter of regular contact lenses, circle lenses have no more than 15mm diameter since larger sizes would be harmful to the eyes at daily wear. When the diameter of the circle lens is described as 16mm or 18mm, it is only the provided visual effect of the circle lens. The difference between the two types of lenses is that circle lenses are tinted not only in areas that cover the iris of the eye, but also prominently in the extra-wide outer rim of the lens. The result is the appearance

neg: Keratoconus of the condition. In people with keratoconus, rigid contact lenses improve vision by means of tear fluid filling the gap between the irregular corneal surface and the smooth regular inner surface of the lens, thereby creating the effect of a smoother cornea. Many specialized types of contact lenses have been developed for keratoconus, and affected people may seek out both doctors specialized in conditions of the cornea, and contact lens fitters who have experience managing people with keratoconus. The irregular cone presents a challenge and the fitter will endeavor to produce a lens with the optimal contact, stability and steepness.

neg: The Ten Commandments (1956 film) Foch, wore brown contact lenses, at the behest of DeMille, in order to conceal their light-colored eyes which were considered inadequate for their roles. Paget once said that, "If it hadn't been for the lenses I wouldn't have got the part." However, she also said that the lenses were "awful to work in because the kleig lights heat them up". When DeMille cast Yvonne De Carlo as Sephora, she was worried about having to wear these contact lenses; she also believed that her gray eyes were her best feature. She asked DeMille to make an exception for her. He agreed,

neg: Acanthamoeba effects, but as the drugs are already approved, human infections can be targeted after dose calculations in clinical trials done with these diverse groups of drugs. When present in the eye, "Acanthamoeba" strains can cause acanthamoebic keratitis, which may lead to corneal ulcers or even blindness. This condition occurs most often among contact lens wearers who do not properly disinfect their lenses, exacerbated by a failure to wash hands prior to handling the lenses. Multipurpose contact lens solutions are largely ineffective against "Acanthamoeba", whereas hydrogen peroxide-based solutions have good disinfection characteristics. The first cure of a corneal infection was achieved

neg: Optics and vision virtually invisible—many commercial lenses are tinted a faint blue to make them more visible when immersed in cleaning and storage solutions. Some cosmetic lenses are deliberately colored to alter the appearance of the eye. Lenses now have a slight bluish tint which is a thin UV coating; this reduces glare and cornea damage much like a pair of sunglasses. Photorefractive keratectomy (PRK) and Laser-Assisted Sub-Epithelial Keratectomy (or Laser Epithelial Keratomileusis) (LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. The first LASEK procedure was performed at Massachusetts Eye and Ear

neg: Nikonos they did not have the benefit of the specialized water-contact optics. Water resistant (LW) but not waterproof, manual-focus, lenses: Waterproof (W), manual-focus, lenses: Underwater-only (UW), manual-focus, lenses: Underwater-only (UW), auto-focus (for RS model only) lenses: Other lenses and accessories for the Nikonos included: The Nikonos is often referred to as a rangefinder camera, but in truth it is a scale focus camera as there is no rangefinder. The viewfinder is used purely to compose the shot, and to display exposure information. Focus is set with an outsized dial mounted on the left side of the lens barrel (as seen from

neg: Westworld (film) one of the final films to be shot there. It was filmed with Panavision anamorphic lenses by Gene Polito, A.S.C. Richard Benjamin later said he loved making the film: It probably was the only way I was ever going to get into a Western, and certainly into a science-fiction Western. It's that old thing when actors come out here from New York. They say, "Can you ride a horse?" And you say, "Oh, sure," and then they've got to go out quick and learn how to ride a horse. But I did know how to ride a horse! So you

neg: Acuvue less expensive alternative to Acuvue. Acuvue Acuvue (from "Accurate view") is a brand of disposable contact lenses made in Jacksonville Florida and Limerick-based Vistakon, a subsidiary of Johnson & Johnson (J&J). Acuvue lenses got their start at Frontier Contact Lens Company, a small company that started in the 1950s and opened a branch in Jacksonville. Headed by Seymour Marco, an optometrist, the company started to grow and, after a few years, Marco bought out the New York owners so he could significantly grow the business. During the 1970s, he developed a new material (etafilcon A) and began making soft lenses

neg: Acuvue Acuvue Acuvue (from "Accurate view") is a brand of disposable contact lenses made in Jacksonville Florida and Limerick-based Vistakon, a subsidiary of Johnson & Johnson (J&J). Acuvue lenses got their start at Frontier Contact Lens Company, a small company that started in the 1950s and opened a branch in Jacksonville. Headed by Seymour Marco, an optometrist, the company started to grow and, after a few years, Marco bought out the New York owners so he could significantly grow the business. During the 1970s, he developed a new material (etafilcon A) and began making soft lenses at Frontier. In 1981 he

neg: Fairness to Contact Lens Consumers Act the law was released by the FTC in July 2004. In October 2004, the FTC released a "A Guide for Prescribers and Sellers". The Act followed a surge in the use of contact lenses by Americans, which had been increasing ever since soft contact lenses became commercially available. The Act also followed a 1997 investigation by 17 state attorneys general that found that purchasers of contact lenses from eye care practitioners had no fewer ocular health problems than purchasers of contact lenses from other sources. Fairness to Contact Lens Consumers Act The Fairness to Contact Lens Consumers Act (, codified

neg: Contact lens into place over the cornea. Problems may arise if the lens folds, turns inside-out, slides off the finger prematurely, or adheres more tightly to the finger than the eye surface. A drop of solution may help the lens adhere to the eye. When the lens first contacts the eye, it should be comfortable. By making sure that particular attention is given to the eyelid margins for the presence of inflammation and signs of debris in the lashes, wearing contact lenses should be easy. A brief period of irritation may occur, caused by a difference in pH and/or salinity between that

neg: Contact lens change eye color are far less common, accounting for only 3% of contact lens fits in 2004. In the United States, the FDA labels non-corrective cosmetic contact lenses as "decorative contact lenses". Like any contact lens, cosmetic lenses carry risks of mild to serious complications, including ocular redness, irritation and infection. Due to their medical nature, colored contact lenses, similar to regular ones, are illegal to purchase in the United States without a valid prescription. Those with perfect vision can buy color contacts for cosmetic reasons, but they still need their eyes to be measured for a "plano" prescription, meaning

neg: Effects of long-term contact lens wear on the cornea time. Knowledge concerning the form and function of the cornea and the various types of contact lenses and their common complications is important to understanding this article. The effects of extended contact lens wear on the cornea have been studied extensively and are well-documented. When determining the effects of long-term contact lens use on the cornea, many studies do not differentiate between users of hard and soft contact lenses, while studies that have made this differentiation have found similar results. This is probably because most contact lens-induced changes to the cornea are caused by hypoxia, which occurs as long as

neg: Contact lens eyes, corneal abrasions and erosion, keratitis, corneal edema, descemetocele, corneal ectasis, Mooren's ulcer, anterior corneal dystrophy, and neurotrophic keratoconjunctivitis. Contact lenses that deliver drugs to the eye have also been developed. Glass lenses were never comfortable enough to gain widespread popularity. The first lenses to do so were those made from polymethyl methacrylate (PMMA or Perspex/Plexiglas), now commonly referred to as "hard" lenses. Their main disadvantage is they do not allow oxygen to pass through to the cornea, which can cause a number of adverse, and often serious, clinical events. Starting in the late 1970s, improved rigid materials which were

neg: Contact lens a small amount of cleaning fluid as a lubricant. However, this method does not sterilize the lenses and so should be performed only before a full sterilization cycle (e.g. when putting the contact lens away at night). Some products must be used only with certain types of contact lenses. Water alone will not at all disinfect the lens, and can lead to lens contamination causing potentially irreparable harm to the eye. Contact lens solutions often contain preservatives such as benzalkonium chloride and benzyl alcohol. Preservative-free products usually have shorter shelf lives, but are better suited for individuals with an allergy

neg: Scleral lens with two dots, and a "right" is marked with one dot. Scleral lenses are removed using the fingers, or a small lens removal plunger. Lenses are then cleaned and sanitized before reinsertion. Scleral lenses cannot be worn while sleeping, so many wearers sanitize their lenses overnight. Unlike regular contact lenses, many sclerals can be stored dry when unused for longer periods of time. A scleral lens is a prototypical lens dating back to the early 1880s. Originally these lenses were designed by using a substance to take a mold of the eye. Lenses would then be shaped to conform to

neg: Bake McBride season as the starting right fielder for the Indians, but he suffered an eye infection and did not play after May 21. He had started the season hitting .365 in 27 games. McBride said that the eye infection was related to his contact lenses and he thought that his recovery had been delayed by trying to wear other types of contacts. He said that he had worn hard contact lenses since 1970, and that he had damaged his corneas by wearing contacts all of the time. McBride said that his corneal issue was such that he was unable to switch

neg: Circle contact lens of a bigger, wider iris with a limbal ring, creating an illusion of large eyes. The optical zone in the middle is transparent and it is large enough to provide clear vision. When big eye contacts first launched, they were only available in yearly disposable format, but as the trend spread, these lenses are now available as dailies, biweeklies and monthlies. The lenses are popular among teenagers and young adults. Many people consider circle lenses to be a fashion accessory rather than a medical device. In Hong Kong, many young female models wear them as popular fashion icons. In Asia,

neg: Contact lens oxygen-permeable were developed. Contact lenses made from these materials are called rigid gas permeable lenses or 'RGPs'. A rigid lens is able to cover the natural shape of the cornea with a new refracting surface. This means that a spherical rigid contact lens can correct corneal astigmatism. Rigid lenses can also be made as a front-toric, back-toric, or bitoric. Rigid lenses can also correct corneas with irregular geometries, such as those with keratoconus or post surgical ectasias. In most cases, patients with keratoconus see better through rigid lenses than through glasses. Rigid lenses are more chemically inert, allowing them to

neg: Acanthamoeba keratitis trauma. In fact, the first case of "Acanthamoeba" keratitis described was due to ocular trauma. Once on the contact lens, "Acanthamoeba" is able to survive in the space between the contact lens and the surface of the eye. Soft contact lenses are more adherent to the corneal surface than hard lenses, which allows the "Acanthamoeba" organism to bind to mannosylated glycoproteins on the corneal surface. Expression of these proteins on the corneal surface is increased by contact lens use. This increase in glycoprotein content, along with microtrauma to the corneal epithelial surface due to contact lens use increases the risk

neg: Effects of long-term contact lens wear on the cornea any physical barrier to the surface of the cornea is present. In certain instances, hard contact lenses were shown to cause the same changes in corneal structure as soft contact lenses, though these changes were more dramatic because rigid lenses are capable of inflicting greater trauma on the eyes. Long-term use of soft hydrogel contact lenses has been shown to alter the following in the cornea: epithelial oxygen uptake, epithelial thickness, stromal thickness, and corneal endothelial morphology. Furthermore, the formation of epithelial vacuoles and microcysts has been observed following long-term contact lens wear. Vacuoles are fluid-filled chambers that begin to

neg: Lens.com, Inc. v. 1-800 Contacts, Inc. computer network." The United States Patent and Trademark Office (USPTO) rejected the application, citing the prior registration of the same trademark by another company in connection with ""computer software" featuring programs used for electronic ordering of contact lenses in the field of ophthalmology, optometry and opticianry." Lens.com was eventually assigned this prior-registered trademark by the other company as part of the settlement of a lawsuit. However, Lens.com did not proceed to register the trademark "LENS" in connection with "retail store services" as it had previously attempted to do. It continued selling contact lenses to consumers through its website. In 2008,

neg: Oxygen permeability hydrogel contact lenses in some countries in the 1960s and approved by the FDA in the U.S. in 1971, has a Dk of 9 . These days, typical values of oxygen permeability for hydrogel contact lenses range from 25 to 50. For example, Nelfilcon A has a Dk value of 26, and the Omafilcon A has a Dk of 25. While those numbers are typical of hydrogel contact lenses, many contact lenses are made of silicone hydrogel, which has a much higher oxygen permeability. For example, the Dk value of Lotrafilcon B and Comfilcon A, two silicone hydrogels, is 110

neg: Contact lens cleaning. Other lenses need regular cleaning and disinfecting to prevent surface coating and infections. There are many ways to clean and care for contact lenses, typically called care systems or lens solutions: Aside from cleaning the contact lenses, it is highly advised to also clean the cases to avoid any possible infection. Replacing the case monthly, and storing it in a clean and safe environment is also recommended. Contact lenses can be mechanically cleaned of more substantial protein, lipid and debris build up by rubbing them between the clean pad of a finger and the palm of a hand, using

neg: Diving mask front of the eyes, the eye is able to focus nearly normally. The shape of the air space in the mask slightly afects the ability to focus. Corrective lenses can be fitted to the inside surface of the viewport or contact lenses may be worn inside the mask to allow normal vision for people with focusing defects. When the diver descends, the ambient pressure rises, and it becomes necessary to equalise the pressure inside the mask with the external ambient pressure to avoid the barotrauma known as mask squeeze, This is done by allowing sufficient air to flow out through

neg: Contact lens emphasize his horrific looking black pupils and red bloodshot eyes. Tony Curtis wore them in the 1968 film "The Boston Strangler". Contact lenses were also used to better emphasize the sinister gaze of the demonic characters in 1968's "Rosemary's Baby" and 1973's "The Exorcist". Colored custom-made contact lenses are now standard makeup for a number of special effects-based movies. Contact lens A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye. Contact lenses are considered medical devices and can be worn to correct vision, or for cosmetic or therapeutic reasons. In 2004,

neg: Roger Hardy company, Hardy recognized that purchasing contact lenses was expensive, time consuming and service constrained for consumers. In 2000, Hardy founded Coastal Contacts Inc. The Company started in a basement office with one phone line, a 14K modem, a ping pong table and a Visa card. Hardy purchased the keyword “contact lens” from AltaVista and Snap.com. This keyword was not known to have any value at the time and no other companies were advertising on the keyword. Hardy bought the exclusive rights to “contact lenses” and launched with that advertising. In the first day, they had 30 orders; within the first

neg: Contact lens lenses may "decrease the entire corneal thickness and increase the corneal curvature and surface irregularity." Long-term wear of rigid contacts is associated with decreased corneal keratocyte density and increased number of epithelial Langerhans cells. All contact lenses sold in the United States are studied and approved as safe by the FDA when specific handling and care procedures, wear schedules, and replacement schedules are followed. Before touching the contact lens or the eye, it is important to wash hands thoroughly with soap and rinse well. Soaps containing moisturizers or allergens should be avoided as these can cause eye irritation. Drying of

neg: Contact lens polymer. Its patent claims that the material uses two siloxy macromers of different sizes that, when used in combination, produce very high oxygen permeability (for a given water content). Enfilcon A (Avaira, CooperVision) is another third-generation material that is naturally wettable; its water content is 46%. Contact lenses are classified in many different ways: by their primary function, material, wear schedule (how long a lens can be worn), and replacement schedule (how long before a lens needs to be discarded). Corrective contact lenses are designed to improve vision, most commonly by correcting refractive error. This is done by directly focusing

neg: Adam (Buffy the Vampire Slayer) Optic Nerve sketched and sculpted Adam's appearance. They had Hertzberg come in to have molds made for prosthetic parts to fit his head and face, arms, chest, and legs, then he was fitted for contact lenses. They also created separate hands and a chest to film for close-up shots. Adam has a floppy disk drive mounted on his chest which, when used, had to be filmed without Hertzberg behind it. The entire construction of Adam's appearance took about two weeks. Hertzberg's voice was also modified post-production. When he saw the full Adam prosthetic and costume, his biggest concern was being

neg: Diving mask Bifocal lenses are also available for this application. Some masks are made with removable lenses, and a range of standard corrective lenses are available which can be fitted. Plastic self-adhesive lenses that can be applied to the inside of the mask may fall off if the mask is flooded for a significant period. Contact lenses may be worn under a mask or helmet, but there is some risk of losing them if the mask is dislodged in turbulent water. A mask is considered to fit well when it seals comfortably and effectively all round the skirt, and provides a good

neg: Otto Wichterle studying of the synthesis of cross-linking hydrophilous gels, with the aim of finding a material suitable for employment in permanent contact with living tissues. Wichterle accepted the help of one of his colleagues, Drahoslav Lím, and together they succeeded in preparing a cross-linking gel which absorbed up to 40% of water, exhibited suitable mechanical properties and was transparent. This new material was the Poly(2-hydroxyethyl methacrylate) (pHEMA), that they patented in 1953. Wichterle thought pHEMA might be a suitable material for contact lenses and gained his first patent for soft contact lenses. On 1954 this material was first used as an

neg: Contact lens and opticians. An eye examination is needed to determine an individual's suitability for contact lens wear. This typically includes a refraction to determine the proper power of the lens and an assessment of the health of the eye's anterior segment. Many eye diseases prohibits contact lens wear, such as active infections, allergies, and dry eye. Keratometry is especially important in the fitting of rigid lenses. Contact lenses are prescribed by ophthalmologists, optometrists, or specially licensed opticians under the supervision of an eye doctor. Contact lenses can typically be ordered at the office that conducts the eye exam and fitting. The

neg: CooperVision the acquisition of Sauflon Pharmaceuticals Limited, a UK based manufacturer of daily disposable silicone based contact lenses. CooperVision develops, manufactures, and markets a range of contact lenses to a worldwide market. CooperVision produces both spherical contact lenses and specialty lens products in varying wearing and replacement schedules (i.e., how long a lens can be worn prior to removal and before it must be discarded). America's Best, Walmart and Vision Source Private Label Contacts are manufactured by CooperVision. According to FTC Lens rules a contact seller may replace a private label brand with an identical contact made by the same manufacturer.

neg: Effects of long-term contact lens wear on the cornea lenses. Effects of long-term contact lens wear on the cornea Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake, etc. Other changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris) as well as the emergence of polymegethism in the corneal endothelium. Decreased corneal sensitivity, vision loss, and photophobia have also been observed in patients who have worn contact lenses for an extended period of time. Many contact lens-induced changes in corneal structure are reversible if contact lenses are removed for an extended period

neg: Patrick Meek a personal best time of 13:26.06 in the 10,000 meters en route to a second-place finish. In 2013, he won the United States title in the 25,000 and 50,000 meter races. At the Olympic Trials in December, in the 5,000 meter race Meek had both contact lenses come out with 1.5 laps to go. As a result, he "[couldn't] really see anything" but got through the race with the help of his coach yelling encouragements. He finished the race in 6:27.90, good enough for third place and a spot on the Olympic team. "It was kind of frightening", Meek recalled,

neg: Contact lens is now used to the original PMMAs, which are still occasionally fitted and worn, whereas "rigid" is a generic term for all these lens types; thus hard lenses (PMMAs) are a subset of rigid contact lenses. Occasionally, the term "gas permeable" is used to describe RGPs, which is somewhat misleading as soft contact lenses are also gas permeable in that they allow oxygen to get through to the ocular surface. The principal breakthrough in soft lenses was made by Czech chemists Otto Wichterle and Drahoslav Lím, who published their work ""Hydrophilic gels for biological use"" in the journal "Nature" in

neg: Contact lens internalization of the microbes, and induction of the inflammatory response. One way to alleviate hypoxia is to increase the amount of oxygen transmitted to the cornea. Although silicone-hydrogel lenses almost eliminate hypoxia in patients due to their very high levels of oxygen transmissibility, they also seem to provide a more efficient platform for bacterial contamination and corneal infiltration than other conventional hydrogel soft contact lenses. A recent study showed that "Pseudomonas aeruginosa" and "Staphylococcus epidermis" adhere much more strongly to unworn silicone hydrogel contact lenses than conventional hydrogel lenses and that adhesion of "Pseudomonas aeruginosa" was 20 times stronger than

neg: Clearly initially exclusively sold contact lenses on their storefronts. In 2008, the company, as Coastal Contacts in the US and Clearly Contacts in Canada, launched the sale of glasses and sunglasses. Clearly provides customers with contact lenses and eye care products direct from manufacturers such as Johnson and Johnson, Ciba Vision. Currently, they carry over 100 types of contacts, including contacts from Acuvue, Focus Dailies, Freshlook, Proclear and PureVision. The company also provides daily and extended wear lenses, and coloured contact lenses. In 2008, Clearly introduced related vision care products, such as designer eyeglasses and sunglasses. They currently sell eyeglasses and

neg: Paul Wellstone exaggerated his flying experience, most of which had been accrued before a 9–10 year hiatus from flying due to a fraud conviction and poor eyesight. He had had Lasik surgery but it had improved his vision to only 20/50 or 20/30 and he was required by FAA regulations to wear corrective lenses, but the pilot's wife and Cooney said Conry did not wear lenses after the surgery. The coroner who examined his body was unable to determine whether Conry was wearing contact lenses at the time of the crash. Coworkers described Guess as having had to be consistently reminded to

neg: Pentax K-mount Pentax K lenses). The 'P' setting is not compatible with the 'A' setting as the 'P' pin is in a different location than the 'A' contact on Pentax 'A' lenses and the flange on Pentax bodies. The R-K-mount is used on Rikenon P lenses, Ricoh bodies that include the letter 'P' in their model number, and some non-Ricoh lenses. It is compatible with all other K-mount cameras and lenses when in manual or aperture-priority exposure modes, however the extra pin needs to be removed for safe use on autofocus Pentax cameras, as it can otherwise become locked within the autofocus

neg: Cataract surgery had to wear very thick eyeglasses or some special type of contact lenses. Presently, IOLs are especially designed for patients with different vision problems. The main types of IOLs that now exist are divided into monofocal and multifocal lenses. The monofocal intraocular lenses are the traditional ones, which provide vision at one distance only: far, intermediate, or near. Patients who choose these lenses over the more developed types will probably need to wear eyeglasses or contact lenses for reading or using the computer. These intraocular lenses are usually spherical, and they have their surface uniformly curved. The multifocal intraocular lens

neg: Fungal contamination of contact lenses suffice. Due to the findings of this study, it is suggested that regular replacement of contact lens cases is essential. Genus and species widely associated with fungal contamination of contact lenses include, but not limited to: Factors which contribute to fungal contamination of contact lenses include, but not limited to, "hygiene negligence such as": Studies suggest a number of "recommendations for contact lens wearers to prevent contamination" by both bacterial and fungal contaminants which include: Diagnosis is determined "by recognition of typical clinical features" and through "direct microscopic detection of fungi in scrapes, biopsy specimens, and other samples." Ultimately, cultures

neg: Lensless glasses Dwyane Wayne tonight", referencing Kadeem Hardison's popular character from "A Different World". Lensless glasses Lensless glasses are glasses that lack lenses. They are worn solely for aesthetic or fashion purposes, having no function in vision correction or eye protection. The frames are usually oversized, and commonly all black in color. They may be worn in conjunction with contact lenses. Advantages of lensless glasses are that they do not fog or reflect, and there is no lens that will touch long eyelashes and eyelash extensions. Lensless glasses first became popular in Japan in the 1990s. The trend died out, but has

neg: Lensless glasses Lensless glasses Lensless glasses are glasses that lack lenses. They are worn solely for aesthetic or fashion purposes, having no function in vision correction or eye protection. The frames are usually oversized, and commonly all black in color. They may be worn in conjunction with contact lenses. Advantages of lensless glasses are that they do not fog or reflect, and there is no lens that will touch long eyelashes and eyelash extensions. Lensless glasses first became popular in Japan in the 1990s. The trend died out, but has resurged recently in China and Taiwan. Maison Martin Margiela released gold frames

neg: A Nightmare on Elm Street (2010 film) all the way down his back. The appliances were then blended together to create a seamless appearance. Haley spent approximately three hours and twenty minutes each day in the make-up chair to apply the appliances; on occasion, it would take almost four-and-a-half hours when the crew also needed to apply the prosthetic skull cap. Haley did not need to worry about the skull cap most days because he was able to wear the fedora on top of his head. Haley also had to wear contact lenses—one bloody, one cloudy. The cloudy contact lens made it difficult for the actor to

neg: Alan Mcilwraith also claimed that Mcilwraith had asked some students for disclosure documents and taken their National Insurance numbers and other details after duping them into filling in recruitment forms. When a journalist from the "Record" met Mcilwraith at Glasgow Central Station, he was wearing "striking blue" contact lenses. Mcilwraith claimed he was working for an agency that housed asylum seekers, denied passing himself off as a student and said that the stories of his latest tall tales had come from students getting confused after too many drinks. He stated: "I have been trying to recruit people for the company I work

neg: LASIK contact lenses should stop wearing them for a minimum of six weeks plus another six weeks for every three years the hard contacts have been worn. The cornea is avascular because it must be transparent to function normally. Its cells absorb oxygen from the tear film. Thus, low-oxygen-permeable contact lenses reduce the cornea's oxygen absorption, sometimes resulting in corneal neovascularization—the growth of blood vessels into the cornea. This causes a slight lengthening of inflammation duration and healing time and some pain during surgery, because of greater bleeding. Although some contact lenses (notably modern RGP and soft silicone hydrogel lenses) are

neg: Contact lens not restore normal color vision, it allows some color-blind people to distinguish colors better. Red-filtering contact lenses can also be an option for extreme light sensitivity in some visual deficiencies such as achromatopsia. ChromaGen contact lenses have been used and shown to have some limitations with vision at night although otherwise producing significant improvements in color vision. An earlier study showed very significant improvements in color vision and patient satisfaction. Later work that used these ChromaGen lenses with dyslexics in a randomised, double-blind, placebo controlled trial showed highly significant improvements in reading ability over reading without the lenses. This system

neg: RLI Corp. the first insurers of contact lenses, and eventually, it emerged as the largest insurer of its kind in the world. Over time, the demand for contact lens insurance shrank with the emergence of more affordable disposable soft lenses. In order to remain competitive, Stephens expanded RLI’s offerings to include commercial property and liability insurance. In 1994, the company retired its founding contact lens insurance product and in 1996 RLI sold its RLI Vision unit to Maui Jim, a manufacturer of luxury sunglasses. Currently, RLI offers a variety of specialty insurance coverages designed for niche markets that are underserved by the

neg: Morgan Lens sterile fluid or medication to the eye. Morgan noted that, especially in a war zone or an emergency room, medical personnel rarely had the time to continue administering eye drops to a patient continuously for a long enough period of time to thoroughly cleanse an irritated or infected eye. As such, in February 1969, in Vinh Long, Morgan molded a simple device for cleaning the eye. Morgan was familiar with contact lenses (wearing them himself and often prescribing them to his patients), and his first Morgan Lens was larger than a modern contact lens, resembling the early contact lenses of

neg: Contact lens one with zero vision correction. This is for safety reasons so the lenses will fit the eye without causing irritation or redness. Some colored contact lenses completely cover the iris, thus dramatically changing eye colour. Other colored contact lenses merely tint the iris, highlighting and beautifying its natural colour. A new trend in Japan, South Korea and China is the circle contact lens, which extend the appearance of the iris onto the sclera by having a dark tinted area all around. The result is an appearance of a bigger, wider iris, a look reminiscent of dolls' eyes. One of the

neg: Iron phosphide the eyes, especially for individuals wearing contact lenses. Contact lenses have been known to react poorly with iron phosphide due to its corrosive properties, but the scientific world does not all agree on the use of contact lenses in association with iron phosphide. In case of inhalation, the person should be moved to fresh air or given artificial respiration if not breathing. In case of ingestion, the person's mouth should be rinsed with water unless unconscious. In case of eye contact, immediate eye flushing is necessary. Iron phosphide Iron phosphide is a chemical compound of iron and phosphorus, with a