Search results
Results From The WOW.Com Content Network
Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [ 2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
The dark blue, teal, and gold tapetum lucidum from the eye of a cow Retina of a mongrel dog with strong tapetal reflex. The tapetum lucidum (Latin for 'bright tapestry, coverlet'; / t ə ˈ p iː t əm ˈ l uː s ɪ d əm / tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida) [1] is a layer of tissue in the eye of many vertebrates and some other animals.
Carotenosis is a benign and reversible medical condition where an excess of dietary carotenoids results in orange discoloration of the outermost skin layer. The discoloration is most easily observed in light-skinned people and may be mistaken for jaundice. [ 1][ 2]: 540 [ 3]: 681 Carotenoids are lipid-soluble compounds that include alpha- and ...
Morris Frank (March 23, 1908 – November 22, 1980) was a co-founder of The Seeing Eye, the first guide-dog school in the United States. He traveled the United States and Canada to promote the use of guide dogs for people who are blind or visually impaired, as well as the right of people with guide dogs to access restaurants, hotels ...
Heterochromia iridum. Heterochromia is a variation in coloration most often used to describe color differences of the iris, but can also be applied to color variation of hair [ 1] or skin. Heterochromia is determined by the production, delivery, and concentration of melanin (a pigment ). It may be inherited, or caused by genetic mosaicism ...
Guiding Eyes for the Blind is a non-profit school based in Yorktown Heights, New York that trains guide dogs to aid people who are visually impaired. It also operates a canine development center in Patterson, New York, and a training site in White Plains, New York. [1] It was the first guide dog training school to be accredited by the National ...
Slanna, a 10-year-old mixed breed, brindle and white dog, has lost both her eyes. She was found as a stray dog and brought to the privately run SPCA from the Wake County Animal Shelter.
Childhood blindness is an important contribution to the national prevalence of the disability of blindness. [ 3] Blindness in children can be defined as a visual acuity of <3/60 in the eye with better vision of a child under 16 years of age. [ 4] This generally means that the child cannot see an object 10 feet (about 3 meters) away, that ...