A blind spot in the visual field, which may be caused by a variety of disorders affecting the retina or the optic nerves. A "blind spot" may be one-sided or bilateral and sometimes not appreciated until a specialist performs full visual field testing.

Color scotoma may occur when certain areas of the retina are insensitive to color vision. This may be acquired through damage to the nerve fibers brought about by optic neuritis---itself caused by a large number of conditions: diseases such as anemia, multiple sclerosis, and diabetes mellitus; abuse of tobacco or alcohol; chemical toxicity; and vitamin deficiencies.

Treatment of the neuritis is directed toward the cause, and in some cases recovery is possible if the condition is not progressive.

Sco*to"ma (?), n. [L.] Med.



© Webster 1913.

Log in or register to write something here or to contact authors.