day-blind

A person with day-blindness wears dark glasses outdoors.

Definition

1. Adjective:
   • Medical condition: "day-blind" refers to a condition in which a person has difficulty seeing in bright light, often associated with hemeralopia (day blindness). This is the opposite of night blindness (nyctalopia). The term is used to describe impaired vision under daylight or well-lit conditions.

Usage Examples

• (The person had trouble seeing in bright sunlight.)
• (People with this condition avoid bright environments.)

Advanced Usage

• "to be day-blind": to suffer from hemeralopia.
  • After the accident, he became day-blind and had to change his work schedule. (He lost the ability to see in bright conditions.)

Variants and Related Words

• Hemeralopia (n): the medical term for day blindness.
  • Hemeralopia is a rare condition that affects the retina's response to light. (The formal name for day-blindness.)

Synonyms

• Hemeralopic: relating to or affected by day blindness.
  • The hemeralopic patient required special accommodations. (Describing someone with day-blindness.)

Related Idioms