0_Wizard
Hey, it's a real shame that some people can't get access to glasses or contact lenses
Some also include those who have a decreased ability to see because they do not have access to glasses or contact lenses.
chosen_Visual_impairment_0
Visual impairment
chosen_topic_0_Visual_impairment
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 2015. , the average age of contact lens wearers globally was 31 years old, and two-thirds of wearers were female.
Corrective lens
A corrective lens is a lens typically worn in front of the eye to improve vision. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted most commonly after cataract removal, but can be used for purely refractive purposes. Corrective lenses are typically prescribed by an ophthalmologist or an optometrist. The prescription consists of all the specifications necessary to make the lens.
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 of time.
Glasses
Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears. Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness. Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection for the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation.
Optician
An optician, or "dispensing optician", is a technical practitioner who designs, fits and dispenses corrective lenses for the correction of a person's vision. Opticians determine the specifications of various ophthalmic appliances that will give the necessary correction to a person's eyesight. Some registered or licensed opticians also design and fit special appliances to correct cosmetic, traumatic or anatomical defects. These devices are called shells or artificial eyes. Other registered or licensed opticians manufacture lenses to their own specifications and design and manufacture spectacle frames and other devices.
Keratoconus
Keratoconus (KC) is a disorder of the eye which results in progressive thinning of the cornea. This may result in blurry vision, double vision, nearsightedness, astigmatism, and light sensitivity. Usually both eyes are affected. In more severe cases a scarring or a circle may be seen within the cornea. While the cause is unknown, it is believed to occur due to a combination of genetic, environmental, and hormonal factors. About seven percent of those affected have a family history of the condition. Proposed environmental factors include rubbing the eyes and allergies. The underlying mechanism involves changes of the cornea to a cone shape.
Sunglasses
Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. In the early 20th century, they were also known as sun cheaters (cheaters being an American slang term for glasses). The American Optometric Association recommends sunglasses whenever a person is in the sun to protect the eyes from ultraviolet radiation (UV) and blue light, which can cause several serious eye problems.
Orthokeratology
Orthokeratology (also referred to as Ortho-K, Overnight Vision Correction, Corneal Refractive Therapy and CRT), refers to the creation of gas permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia and astigmatism. This method can be used as an alternative to eyeglasses, refractive surgery, or for those who prefer not to wear contact lenses during the day. Orthokeratology is most often used for candidates with up to -6.00 diopters of myopia. Doctors discovered the reshaping phenomena of glass lenses as early as the 1940s. This history of orthokeratology includes contributions made by Jessen, Ziff, Nolan, Paige, Gates, May, Grant, Fontana, Tabb, Freeman, Shed, Kerns, and Binder to the use of contact lenses for myopia reduction.
Bausch &amp; Lomb
Bausch + Lomb is an American eye health products company based in Bridgewater, New Jersey. It is one of the world's largest suppliers of contact lenses, lens care products, pharmaceuticals, intraocular lenses, and other eye surgery products. Founded in Rochester, New York in 1853 by optician John Bausch and financier Henry Lomb, Bausch + Lomb is one of the oldest continually operating companies in the US. Bausch + Lomb was a public company listed on the NYSE until it was acquired by private equity firm Warburg Pincus in 2007. In May 2013, it was announced that Canadian-based Valeant Pharmaceuticals would acquire Bausch + Lomb from Warburg Pincus for $8.57 billion in cash.
Presbyopia
Presbyopia is a condition associated with aging of the eye that results in progressively worsening ability to focus clearly on close objects. Symptoms include difficulty reading small print, having to hold reading material farther away, headaches, and eyestrain. Different people will have different degrees of problems. Other types of refractive errors may exist at the same time as presbyopia. Presbyopia is a natural part of the aging process. It is due to hardening of the lens of the eye causing the eye to focus light behind rather than on the retina when looking at close objects. It is a type of refractive error along with nearsightedness, farsightedness, and astigmatism.
1_Apprentice
Why not?
0_Wizard
I suppose it's because they're expensive. They're often worn to correct vision but some are cosmetic and even therapeutic
Contact lenses are considered medical devices and can be worn to correct vision, or for cosmetic or therapeutic reasons.
self_Contact_lens_1
Contact lens
self_0_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 2015. , the average age of contact lens wearers globally was 31 years old, and two-thirds of wearers were female.
Optics and vision
Visual perception is the ability to interpret information and surroundings from visible light reaching the eye. The resulting perception is also known as eyesight, sight or vision. The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in psychology, cognitive science, neuroscience and molecular biology. The visual system in humans allows individuals to assimilate information from the environment. The act of seeing starts when the lens of the eye focuses an image of its surroundings onto a light-sensitive membrane in the back of the eye, called the retina.
Corrective lens
A corrective lens is a lens typically worn in front of the eye to improve vision. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted most commonly after cataract removal, but can be used for purely refractive purposes. Corrective lenses are typically prescribed by an ophthalmologist or an optometrist. The prescription consists of all the specifications necessary to make the lens.
Black tie
Black tie, occasionally known in the English-speaking world by its French name cravate noire, is a dress code for evening events and social functions derived from British and American costume conventions of the 19th century. For gentlemen, the principal elements of Black Tie are a white dress shirt with a black bow tie, an evening waistcoat or cummerbund and a dinner jacket (called a tuxedo in the United States). Traditionally worn only for events after 7 p.m., black tie is less formal than white tie but more formal than informal or business dress. In the United States, the gentlemen's form of black tie attire is often referred to as a tuxedo.
Kimono
The is a traditional Japanese garment. The word "kimono", which actually means a "thing to wear" ("ki" "wear" and "mono" "thing"), has come to denote these full-length robes. The standard plural of the word kimono in English is "kimonos", but the unmarked Japanese plural "kimono" is also used. The kimono is always worn for important festivals or formal occasions. It is a formal style of clothing associated with politeness and good manners. Kimono have T-shaped, straight-lined robes worn so that the hem falls to the ankle, with attached collars and long, wide sleeves. Kimono are wrapped around the body, always with the left side over the right (except when dressing the dead for burial) and are secured by a sash called an "obi", which is tied at the back.
Uniforms of the British Army
The uniforms of the British Army currently exist in twelve categories ranging from ceremonial uniforms to combat dress (with full dress uniform and frock coats listed in addition). Uniforms in the British Army are differentiated according to the regiment (or corps) to which a soldier belongs. Full dress is the oldest form of uniform and presents the most differentiation between units; although there is then a 'steady thinning out of regimental features', through ceremonial dress, service dress, barrack dress and combat dress, a level of regimental distinction runs throughout. Senior officers, of full colonel rank and above, do not wear regimental uniform (except when serving in the honorary position of a Colonel of the Regiment); rather, they wear their own 'staff uniform' (which includes a coloured cap band and matching gorget patches in several orders of dress).
Kilt accessories
The modern, tailored kilt which is ubiquitous at Highland games gatherings around the world has associated with it an evolving style of wear. This style includes the accessories and other accoutrements which are typically worn with it. In this sense, it is very much like other items of the fashion world. Along with this development, a range of opinion concerning proper, appropriate, or even "correct" styles has also developed. Attitudes range from those who hold very firm views on the etiquette of how, where, and with what, to wear the kilt, to those with more relaxed views, such as is represented by the following quotation from Matthew Newsome's "Patented Advice for the First-Time Kilt Wearer":  This article will attempt to detail some of the more common kilt accessories as seen in actual wearing practice.
Botulinum toxin
Botulinum toxin (BTX) is a neurotoxic protein produced by the bacterium "Clostridium botulinum" and related species. It prevents the release of the neurotransmitter acetylcholine from axon endings at the neuromuscular junction and thus causes flaccid paralysis. Infection with the bacterium causes the disease botulism. The toxin is also used commercially in medicine, cosmetics and research. Botulinum is the most acutely lethal toxin known, with an estimated human median lethal dose (LD) of 1.3–2.1 ng/kg intravenously or intramuscularly and 10–13 ng/kg when inhaled. There are eight types of botulinum toxin, named type A–H.
1920s in Western fashion
The 1920s is the decade in which fashion entered the modern era. It was the decade in which women first abandoned the more restricting fashions of past years and began to wear more comfortable clothes (such as short skirts or trousers). Men also abandoned highly formal daily attire and even began to wear athletic clothing for the first time. The suits men wear today are still based, for the most part, on those worn in the late 1920s. The 1920s are characterized by two distinct periods of fashion. In the early part of the decade, change was slow, as many were reluctant to adopt new styles. From 1925, the public passionately embraced the styles associated with the Roaring Twenties.
Sunglasses
Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. In the early 20th century, they were also known as sun cheaters (cheaters being an American slang term for glasses). The American Optometric Association recommends sunglasses whenever a person is in the sun to protect the eyes from ultraviolet radiation (UV) and blue light, which can cause several serious eye problems.
1_Apprentice
I've never wore contacts before. Is it hard? 
0_Wizard
I don't think it's too hard but it might be a bit daunting at first. You just place it directly on the surface of the eye
A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye.
self_Steven_Beale_0
Contact lens
self_0_Contact_lens
Steven Beale
Steven Beale is a fictional character from the BBC soap opera "EastEnders", played by Edward Farrell from 1989 to 1990, Stuart Stevens from 1992 to 1998, Edward Savage from 1998 to 2002, and Aaron Sidwell from 2007 to 2017. It was announced on 22 February 2008 that the character would be written out at the end of Sidwell's contract, and made his on-screen departure on 9 May 2008. On 2 May 2016, it was announced that Sidwell had returned to the role. Steven made his return on 27 May 2016. On 10 August 2017, it was announced that Sidwell would leave the show again. Steven made his final exit on 8 September 2017 when the character was killed-off during a high-profile stunt week.
Maddy Young
Madeleine "Maddy" Young is a fictional character in the BBC medical drama "Holby City", portrayed by actress Nadine Lewington. The character first appeared on-screen on 16 January 2007, in episode "Face Value" - series 9, episode 15 of the programme. Her final appearance in the show was in the Series 11 episode "Just A Perfect Day" when her character was fatally stabbed. Her role in the show is that of a Senior House Officer undergoing her general surgical rotation in Holby's acute admissions unit. Described by the BBC as "enthusiastic [...] fun" and "dedicated to her job", Maddy was created alongside fellow new character General Surgical Consultant Dan Clifford.
Darren Osborne
Darren Osborne is a fictional character from the British Channel 4 soap opera, "Hollyoaks". He was introduced by executive producer Phil Redmond as part of the Osborne family, and played by Adam Booth, made his first on-screen appearance on 18 November 1996. Booth left the role in 1997, but the character was recast in 1999 with current portrayer Ashley Taylor Dawson. Dawson decided to leave "Hollyoaks" in 2000 to concentrate on his band, allSTARS*, but returned in 2003 and has since remained in the role. As of 2017 Dawson has been on the show for 18 years with a two-year break between 2001 and 2003.
Street Fighter II: The World Warrior
Street Fighter II: The World Warrior is a competitive fighting game originally released for the arcades in . It is the second entry in the "Street Fighter" series and the arcade sequel to the original "Street Fighter" released in . It is Capcom's fourteenth title that runs on the CP System arcade hardware. "Street Fighter II" improves upon the many concepts introduced in the first game, including the use of command-based special moves and a six-button configuration, while offering players a selection of multiple playable characters, each with their own unique fighting style, and introducing a combo system and competitive multiplayer combat between two players.
Sauron
Sauron is the title character and main antagonist of J. R. R. Tolkien's "The Lord of the Rings". In the same work, he is identified as the Necromancer, mentioned in Tolkien's earlier novel "The Hobbit". In Tolkien's "The Silmarillion" (published posthumously by Tolkien's son Christopher Tolkien), he is also described as the chief lieutenant of the first Dark Lord, Morgoth. Tolkien noted that the Ainur, the "angelic" powers of his constructed myth, "were capable of many degrees of error and failing", but by far the worst was "the absolute Satanic rebellion and evil of Morgoth and his satellite Sauron".
List of Agents of S.H.I.E.L.D. characters
"Agents of S.H.I.E.L.D." is an American television series created for ABC by Joss Whedon, Jed Whedon, and Maurissa Tancharoen, based on the Marvel Comics organization S.H.I.E.L.D. (Strategic Homeland Intervention, Enforcement and Logistics Division), a fictional peacekeeping and spy agency in a world of superheroes. It is set in the Marvel Cinematic Universe (MCU), sharing continuity with the feature and short films of the franchise. The series stars Clark Gregg, reprising his role of Phil Coulson from the films, as well as Ming-Na Wen, Brett Dalton, Chloe Bennet, Iain De Caestecker, and Elizabeth Henstridge.
X-Men: The Last Stand
X-Men: The Last Stand is a 2006 superhero film, based on the X-Men superhero team introduced in Marvel Comics. The film, distributed by 20th Century Fox, is the sequel to 2003's "X2" and the third installment in the "X-Men" film series. It was directed by Brett Ratner, written by Simon Kinberg and Zak Penn, and features an ensemble cast, including Hugh Jackman, Halle Berry, Ian McKellen, Famke Janssen, Anna Paquin, Kelsey Grammer, James Marsden, Rebecca Romijn, Shawn Ashmore, Aaron Stanford, Vinnie Jones, and Patrick Stewart. The film's script is loosely based on two "X-Men" comic book story arcs: "The Dark Phoenix Saga" by writer Chris Claremont and artist John Byrne, and "Gifted" by writer Joss Whedon and artist John Cassaday, with a plot that revolves around a "mutant cure" that causes serious repercussions among mutants and humans, and on the resurrection of Jean Grey.
Baahubali 2: The Conclusion
Baahubali 2: The Conclusion, also known as BB2, is an Indian bilingual fantasy-action film directed by S. S. Rajamouli and written by his father K. V. Vijayendra Prasad. It was produced by Shobu Yarlagadda and Prasad Devineni under the banner Arka Media Works. Released on 28 April 2017, The film stars Prabhas, Rana Daggubati and Anushka Shetty, while Ramya Krishnan and Sathyaraj appear in prominent roles. The second cinematic part in the "Baahubali" franchise and the follow-up to "", the film is set in medieval India and follows the sibling rivalry between Amarendra Baahubali and Bhallaladeva; the latter conspires against the former and has him killed by Kattappa.
The Sunday Philosophy Club
The Sunday Philosophy Club is the first of the "Sunday Philosophy Club" series of novels by Alexander McCall Smith, set in Edinburgh, Scotland, and featuring the protagonist Isabel Dalhousie. It was first published in 2004. Isabel Dalhousie is a philosopher in her early forties and lives alone in a large aging house in the south of Edinburgh. Thanks to a large inheritance left to her by her late mother, she is able to work for a nominal fee as the editor of the "Review of Applied Ethics". Her closest friends are her niece Cat, a young attractive woman who runs a delicatessen; her housekeeper Grace, an outspoken woman with an interest in spiritualism; Cat’s ex-boyfriend Jamie, a bassoonist to whom Isabel has been secretly attracted ever since they met; and Brother Fox, an urban fox who lives in Isabel’s garden.
Muhammad Ali vs. Sonny Liston
The two fights between Muhammad Ali and Sonny Liston for boxing's World Heavyweight Championship were among the most anticipated, watched and controversial fights in the sport's history. "Sports Illustrated" magazine named their first meeting, the Liston–Clay fight (Ali had not yet changed his name from Cassius Clay), as the fourth greatest sports moment of the twentieth century. The first bout was held in February 1964 in Miami Beach, Florida. Clay (later Ali) won when Liston gave up at the opening of the seventh round (after being clearly dominated in the sixth). Their second fight was in May 1965 in Lewiston, Maine, which Ali won with a first-round knockout.