hemeralopia /hem·er·a·lo·pia/ (hem″er-ah-lo´pe-ah) day blindness; defective vision in bright light.
hemeralopia
hem·er·a·lo·pi·a (h m  r--l  p -)n. A visual defect marked by the inability to see as clearly in bright light as in dim light. Also called day blindness. |
hemeralopia
[hem′ərəlō′pē·ə]
Etymology: Gk, hemera, day, alaos, blind, ops, eye
an abnormal visual condition in which bright light causes blurring of vision. Hemeralopia is an unpleasant side effect of certain anticonvulsant medications, including trimethadione, prescribed in treatment of children with petit mal epilepsy. Also called day blindness, night sight. hemeralopic, adj.
hemeralopia
day blindness; defective vision in a bright light due to a degeneration or absence of cones. An inherited defect in Alaskan malamutes and miniature poodles.
hemeralopia
Term used to mean either night blindness in which there is a partial or total inability to see in the dark associated with a loss of rod function or vitamin A deficiency; or day blindness in which there is reduced vision in daylight while vision is normal in the dark. Syn. nyctalopia (this term is only synonymous with night blindness); night sight (this term is only synonymous with day blindness). See girate atrophy; congenital stationary night blindness; choroideremia; Oguchi's disease; retinitis pigmentosa.
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