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Nyctalopia (/ ˌ n ɪ k t ə ˈ l oʊ p i ə /; from Ancient Greek νύκτ-(núkt-) 'night' ἀλαός (alaós) 'blind, invisible' and ὄψ (óps) 'eye'), [1] also called night-blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases.
Looking west across West 20th St at Heiskell Library for the Blind on a cloudy morning. The Andrew Heiskell Braille and Talking Book Library, also known as the Heiskell Library and formerly as the Andrew Heiskell Library for the Blind and Physically Handicapped and the New York Free Circulating Library for the Blind is a branch of New York Public Library (NYPL) on West 20th Street in the ...
The school was founded in 1831 as a school for blind children by Samuel Wood, a Quaker philanthropist, Samuel Akerly, a physician, and John Dennison Russ, a philanthropist and physician. The school was originally named New York Institute for the Education of the Blind. It was located at 34th Street and Ninth Avenue in Manhattan, New York City ...
Lighthouse Guild is an American charitable organization, based in New York City, devoted to vision rehabilitation and advocacy for the blind. Its mission statement is "To overcome vision impairment for people of all ages through worldwide leadership in rehabilitation services, education, research, prevention and advocacy."
Individuals with this condition usually start showing signs of nyctalopia (also known as night-blindness) during their early childhood, increase in sensitivity to blue light, progressive decrease of visual acuity in both eyes, cataract, peripheral vision loss, vitreous liquefaction and detachment, clumped pigment deposits of the fundus, either peripheral or central retinoschisis, cystic ...
Childhood blindness is most prevalent among children with genetic ancestry from Africa and Asia, who represent 75% of the world's affected population. [13] [32] A 2014 review indicated that an estimated 238,500 children with bilateral blindness (rate 1.2/1,000) live in the Eastern Mediterranean region. [30]
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Fight for Sight is a nonprofit organization in the United States which funds medical research in vision and ophthalmology.It was formed in 1946 as the National Council to Combat Blindness (NCCB), [1] [2] the first non-profit organization in the United States to fund vision research; 2011 marked its 65th anniversary.