Dictionary
hem•er•a•lo•pi•a
Pronunciation: (hem"ur-u-lō'pē-u), [key]—
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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.