A disorder in color vision, such as inability to distinguish red from green hues, is most often an inherited condition seen primarily in males. To test color vision, we use a book containing color plates. Each plate contains numbers hidden in colored dots, which patients attempt to see. A scoring system is then used to determine whether a color deficiency is present. Some eye diseases can affect color vision as well. Optic nerve problems commonly reduce the ability to discern colors, as can macular problems to some degree. A more complex test is the Farnsworth-Munsell 100 hue test, in which the patient must place numerous colored tiles of varying hues in order. This test can provide valuable information but is not used by most ophthalmologists.
0 Responses
Post a Comment