Leukocoria
| Leukocoria | |
|---|---|
| Classification and external resources | |
 A child with leukocoria due to retinoblastoma in the left eye |
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| ICD-9 | 360.44 |
| DiseasesDB | 33379 |
Leukocoria (also leukokoria[1]) is an abnormal white reflection from the retina of the eye. Leukocoria resembles eyeshine, but leukocoria can occur in humans and other animals that lack eyeshine because their retina lacks a tapetum lucidum.
Leukocoria is a medical sign for a number of conditions, including Coats disease, congenital cataracts, corneal scarring, melanoma of the ciliary body,[2] Norrie disease, ocular toxocariasis, persistence of the tunica vasculosa lentis (PFV/PHPV), retinoblastoma, and retrolental fibroplasia.
Because of the potential life threatening nature of retinoblastoma, a cancer, that condition is usually considered in the evaluation of leukocoria.
[edit] Diagnosis
On photographs taken using a flash, instead of the familiar red-eye effect leukocoria can cause a bright white reflection in an affected eye.[3] Leukocoria may appear also in low indirect light, similar to eyeshine.
Leukocoria can be detected by a routine eye exam (see Ophthalmoscopy). For screening purposes, the red reflex test is used. In this test, when a light is shone briefly through the pupil, an orange red reflection is normal. A white reflection is leukocoria.
[edit] References
- ^ thefreedictionary.com
- ^ Demirci H, Shields CL, Shields JA, Honavar SG, Eagle RC (January 2001). "Leucocoria as the presenting sign of a ciliary body melanoma in a child". The British Journal of Ophthalmology 85 (1): 115–6. PMC 1723667. PMID 11201946. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1723667.
- ^ "The 'strange white light' that nearly killed baby Grace". Daily Mail. June 1, 2009. http://www.dailymail.co.uk/health/article-440032/The-strange-white-light-nearly-killed-baby-Grace.html.
[edit] External links
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Wikimedia Commons has media related to: Leucocoria |
- PHPV Persistent Hyperplastic Primary Vitreous
- Retinoblastoma MedPix Images
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