from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The state or quality of being day-blind.
from The Century Dictionary and Cyclopedia
- n. The common name for the visual defect by which objects are seen distinctly only by a dim light: the opposite of daysight.
Sorry, no etymologies found.
Hemeralopia (etymologically day-blindness, but by common usage meaning day-vision or night-blindness) is a symptom of a peculiar degenerative disease of the retina, called retinitis pigmentosa.