Amblyopia

(am-ble-o' dulled; Sup, eye. Subnormal acutene of vision, due neither to dioptric abnormalism nor to visible organic lesion. It may be congenital; from the use of tobacco (A. nicotinic a), or alcohol, or other toxic influences; from traumatism; or it may be hysterical. Nyctalopia or day-blindne , and hemeralopia or night-blindne , are other forms; it may arise from entoptic phenomena, such as musca volitanlfs, micropsia, megalops i a, meta morpho psi a, etc. It may take the form of contracted fields of vision, of color-blindne , or anesthesia of the retina. A. exanopsia, amblyopia from disuse, or from non-use: argamblyopki is a preferable term. A. post-marital, A. due to sexual exce , called Burns' s Amaurosis.