day blindness

Thân thiện

A person with day blindness wears sunglasses outdoors.

Definition

Noun: * Day blindness: A medical condition of the eyes characterized by an abnormal intolerance or inability to see clearly in bright light. It is often associated with a deficiency in specific cells of the retina.

Usage

This is a technical, medical term. It is used to formally describe a specific visual impairment. * The patient's complaint of severe discomfort in sunlight led to a diagnosis of day blindness. * Day blindness can be a symptom of several underlying eye conditions.

Advanced Usage

• The condition is medically known as hemeralopia. In some contexts, "day blindness" is used interchangeably with hemeralopia, though precise medical definitions can vary.
• It is the opposite of nyctalopia (night blindness).

Variants and Related Words

• Photophobia: While often used similarly in casual contexts, photophobia technically refers to a sensitivity or aversion to light that causes discomfort (like pain or squinting), not necessarily a decrease in visual acuity. Day blindness specifically implies reduced vision in bright light.

Synonyms

• Hemeralopia (medical term)

Học thuật

Noun

1. inability to see clearly in bright light

Từ đồng nghĩa

• hemeralopia