nyctalopia

Night-blindness.

Day-blindness.

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.

See moonblink.

The inability to see clearly in dim light; night blindness

inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder