day blindness
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)
Noun
-
inability to see clearly in bright light
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