Polycoria
≈ 2 min read
Names in other languages
No names in other languages are held for this entry yet.
Article bodies are English and are not machine-translated. A name in another language is not a translation of the article.
Polycoria is a pathological condition of the eye distinguished by more than one pupillary opening in the iris. It may be congenital or result from a disease affecting the iris. It results in decreased function of the iris and pupil, affecting the physical eye and visualization. In the early history of China, double pupils were seen as a sign that a child would become a great king or sage.
Polycoria is a pathological condition of the eye distinguished by more than one pupillary opening in the iris. It may be congenital or result from a disease affecting the iris. It results in decreased function of the iris and pupil, affecting the physical eye and visualization. In the early history of China, double pupils were seen as a sign that a child would become a great king or sage.
Diagnosis
Upon gross examination the patient will typically have excessively long eyelashes. The iris becomes hypoplastic, making abnormally shaped pupils with prominent crypts. The crypts are little squiggly lines that radiate out around the pupil; with this condition, thick round or oval openings can be seen. On diagnosis, signs lead to symptoms where there is more than one set of iris muscles, which controls the amount of light being brought into the eye. When the iris becomes deformed, it will disarrange the control of light coming in leading to blurred vision and finding it hard to visually focus. Polar cataracts will also be present in this condition where a round, opaque malformation of distorted lens fibers is located in the central posterior part of the lens showing deformity.
Prevention
There are no known preventive measures for polycoria, however genetic testing may be able to reveal genetic patterns of the disorder. Conditions such as reduced corneal thickness, are observed in people with cases of polycoria, as well as keratoconus (keratoconus is a corneal disease has the possibility of leading to astigmatism or blindness). However, there are some proposals that it is caused by a dissociation of the pupil margins, a partial coloboma which is a hole in the eye, or abnormal eye tissue composition.
See also
Eye injury Iridodialysis Monocular diplopia Coloboma
References
Text derived from https://en.wikipedia.org/w/index.php?oldid=1375538645 under CC BY-SA 4.0; modifications have been made.