— hemeralopic /hem'euhr euh lop"ik/ , adj.
/hem'euhr euh loh"pee euh/ , n. Ophthalm.
a condition of the eyes in which sight is normal in the night or in a dim light but is abnormally poor or wholly absent in the day or in a bright light. Also called day blindness .
[ 1700-10; hemeralop- (s. of hemerálops having such a condition ( hemer ( a ) day + al ( aós ) blind + -ops having such an appearance) + -ia -IA; cf. -OPIA ]