KEYHOLE PUPIL Meaning and
Definition
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A keyhole pupil refers to an ophthalmological condition characterized by a pupil that appears to be abnormally shaped, resembling the narrow opening of a keyhole. This condition is also known as a "keyhole iris" or "corneal macular disorder".
Typically, the pupil is round and symmetrical in shape, but in cases of keyhole pupil, the oval or slit-like pupil creates a distinctive appearance. This condition can be congenital or acquired due to various factors.
Congenital keyhole pupils are often present from birth and may be associated with genetic disorders or abnormalities in eye development. Acquired keyhole pupils, on the other hand, may be caused by trauma, cataracts, glaucoma, or other ocular conditions.
The irregular shape of the pupil can have various consequences on vision. Refractive errors, such as astigmatism, may occur due to the abnormal shape, resulting in blurred or distorted vision. Additionally, individuals with keyhole pupils may experience problems with depth perception and light sensitivity.
Diagnosis of keyhole pupil is typically made through a comprehensive eye examination, including a thorough evaluation of the pupil's shape and response to light. Treatment options for this condition are aimed at managing any underlying causes, such as surgically removing cataracts or managing related eye conditions.
In summary, a keyhole pupil is an ophthalmological condition characterized by an abnormally shaped pupil, resembling the narrow opening of a keyhole. It can be congenital or acquired, leading to visual impairments and requiring appropriate treatment measures.
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A p. with an artificial coloboma on one side of the pupillary margin.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for KEYHOLE PUPIL
- jeyhole pupil
- meyhole pupil
- leyhole pupil
- oeyhole pupil
- ieyhole pupil
- kwyhole pupil
- ksyhole pupil
- kdyhole pupil
- kryhole pupil
- k4yhole pupil
- k3yhole pupil
- kethole pupil
- keghole pupil
- kehhole pupil
- keuhole pupil
- ke7hole pupil
- ke6hole pupil
- keygole pupil
- keybole pupil
- keynole pupil
Etymology of KEYHOLE PUPIL
The term "keyhole pupil" is a medical term used to describe an abnormal shape of the pupil, which appears as a narrow or irregular slit-like opening. The etymology of this term can be understood by analyzing the two words it comprises: "keyhole" and "pupil".
The word "keyhole" is derived from the combination of two Old English words: "cēag" meaning "key" and "hol" meaning "hole". A keyhole is a small, usually round or oval-shaped hole in a lock or door, through which a key is inserted to open or lock it.
The word "pupil" originates from the Latin word "pupilla", which means "little doll". In ancient Roman texts, the word pupilla referred to a small image reflected in one's eye, as when looking at someone's eyes, one can see their own reflection as a tiny image.
