hypermetropia
/'haipə:mi'troupjə/
Definition
- Noun:
- Hypermetropia is an abnormal condition of the eye in which vision for distant objects is clearer than for near objects. This occurs because light rays entering the eye focus behind the retina, rather than directly on it.
Usage
- Hypermetropia is a technical medical term used primarily in ophthalmology and optometry. It describes a specific type of refractive error. In everyday conversation, the term farsightedness is more commonly used.
Examples
- The optometrist diagnosed the child with hypermetropia, explaining that he could see the board clearly but struggled to read his book.
- Hypermetropia often requires corrective lenses, such as convex glasses or contact lenses, to help focus light correctly on the retina.
- Age-related hypermetropia is less common than presbyopia, as hypermetropia is often present from a young age.
Advanced Usage
- Physiological hypermetropia: A mild degree of hypermetropia that is common in young children and usually corrects itself as the eye grows.
- Pathological hypermetropia: A more severe form caused by abnormal eye development or disease.
Variants and Related Words
- Hypermetropic (Adjective): Relating to or affected by hypermetropia.
- Example: A hypermetropic eye is shorter than normal.
- Hyperope (Noun): A person who has hypermetropia.
- Farsightedness (Noun): The common, non-technical synonym for hypermetropia.
Synonyms
- Farsightedness: The most common synonym.
- Longsightedness (Chiefly British English): Equivalent to farsightedness.
- Hyperopia: A technical synonym often used interchangeably with hypermetropia in medical contexts.
Antonyms
- Myopia: An abnormal condition in which vision for near objects is better than for distant objects; nearsightedness.
- Nearsightedness: The common term for myopia.
Notes
- Hypermetropia is not the same as presbyopia. Presbyopia is age-related difficulty with near vision due to the hardening of the eye's lens, whereas hypermetropia is related to the shape and length of the eyeball and can be present at any age.
Noun
-
abnormal condition in which vision for distant objects is better than for near objects
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