Entropion in cats

The most common conformational eye defect in cats is entropion (curled-in eyelid). This can occur in both upper and lower eyelids in one or both eyes. The symptoms are usually a chronic conjunctivitis which responds to treatment but then recurs when treatment is stopped. It is easily diagnosed and treatment usually involves surgical correction of the defect. 

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The causes of this disease may be breed (esp. Persians and Burmese), congenital defect, spastic (eyelid nerve damage), or cicatricial (scarring post-trauma). If left untreated, this condition usually causes epiphora, blepharospasm (soreness and squinting), photophobia, conjunctivitis, purulent discharge, corneal vascularization, pigmentation and ulceration. Congenital entropion commonly affects dogs and is frequently hereditary in some breeds, whereas cats are uncommonly affected. A predilection for the Persian breed to present primary entropion has been suggested.

Iris pigmentation (normal)