Aniridia is a rare congenital condition characterized by the underdevelopment or even absence of the eye's iris. This usually occurs in both eyes. It is associated with poor development of the retina at the back of the eye resulting in visual loss.

Treatment

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The iris functions to restrict the amount of light entering the eye, so if it is absent, most individuals with aniridia are sensitive to bright outdoor light and their eyes may need protecting. This can be done with tinted glasses, or with a contact lens which has an artificial iris painted onto it.

Aniridia can be associated with other health and developmental problems. It can also be associated with other eye conditions such as: nystagmus, glaucoma, corneal disease, cataract, lens subluxation and optic nerve disease. Children born with aniridia will need to be closely monitored to ensure that no additional problems develop.

Types

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• AN1
• AN2
• Aniridia and absent patella
• Aniridia, microcornea, and spontaneously reabsorbed cataract
• Aniridia, cerebellar ataxia, and mental deficiency

External links

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• The Aniridia Network
• eMedicine

See also

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• WAGR syndrome
• Scleral lenses

Neurology | Ophthalmology

Aniridia | Aniridia