Nyctalopia

n.

1.

(Med.) A disease of the eye, in consequence of which the patient can see well in a faint light or at twilight, but is unable to see during the day or in a strong light; day blindness.

Noun

1.

nyctalopia - inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder Synonyms: moon blindness, night blindness

avitaminosis, hypovitaminosis, moon blindness, night blindness, vision defect, visual defect, visual disorder, visual impairment