night blindness
Definition
Noun: - Inability to see clearly in dim light: A condition characterized by poor vision in low light or darkness, often due to a deficiency of vitamin A or a disorder of the retina.
Usage
- This term is used as a medical or descriptive term for a specific visual impairment. It is typically used in formal, medical, or scientific contexts.
- Example:
Examples
Advanced Usage
- "Suffer from night blindness": To experience the condition.
- He suffers from night blindness and avoids driving after sunset.
- "Cause of night blindness": Referring to the origin of the condition.
- The main cause of night blindness in the region was nutritional deficiency.
Variants and Related Words
- Nyctalopia (n): The formal medical term for night blindness.
- Nyctalopia is the technical term for night blindness.
- Day blindness (Hemeralopia) (n): A related but opposite condition involving poor vision in bright light.
Synonyms
- Nyctalopia: The direct synonym and technical term.
- Poor night vision: A more general, descriptive phrase.
Related Phrases
- Night vision: The general ability to see in low light, not necessarily impaired.
- Cats have excellent night vision.
- Vitamin A deficiency: A common cause of the condition.
- Night blindness is a classic symptom of vitamin A deficiency.
Noun
-
inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
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