color vision deficiency
Học thuậtThân thiện
A child with color vision deficiency cannot tell the red and green crayons apart.
Definition
- Noun:
- A genetic condition affecting color perception: "Color vision deficiency" refers to an inherited condition where a person has difficulty distinguishing between certain colors, particularly differences in hue. It is not a form of blindness but a reduced ability to see colors normally.
- Impaired color discrimination: The term describes the inability to perceive colors in the typical way, most often involving confusion between reds and greens, or less commonly, blues and yellows.
Usage Examples
- Noun:
- The most common form of color vision deficiency is red-green color blindness.
- A simple test can diagnose color vision deficiency.
- His color vision deficiency meant he had trouble reading the color-coded chart.
Advanced Usage
- "to have a color vision deficiency": to be affected by this condition.
- It is estimated that about 8% of men have a color vision deficiency.
- "diagnosis of color vision deficiency": the process of identifying the condition.
- Early diagnosis of color vision deficiency can help in educational planning.
Variants and Related Words
- Color blindness (n): A common, often informal term for color vision deficiency, though it can be misleading as complete color blindness (achromatopsia) is very rare.
- Daltonism (n): A historical term for red-green color vision deficiency.
- Deuteranopia (n): A type of red-green color vision deficiency where green-sensitive cones are absent.
- Protanopia (n): A type of red-green color vision deficiency where red-sensitive cones are absent.
- Tritanopia (n): A rare blue-yellow color vision deficiency.
Synonyms
- Color blindness: Impaired color perception (note: this is the most frequent synonym but is a broader/less precise term).
- Dyschromatopsia: A medical term for a deficiency in color vision.
Related Phrases
- Color vision test: A test designed to detect color vision deficiency.
- All pilots must pass a color vision test.
- Color deficient: An adjective phrase describing a person with this condition.
- Color deficient individuals may see a different number in the test image.
Related Idioms
(This specific medical term is not commonly used in idiomatic expressions.)
A child with color vision deficiency cannot tell the red and green crayons apart.
Noun
- genetic inability to distinguish differences in hue