What is an entropion?
Entropion is the inward turning of the eyelid margin. Usually the lower lid is affected. Several types of entropion have been recognised: congenital, involutional, spastic and cicatricial.
The eyelid turning inward causes irritation and damage to the ocular surface (the conjunctiva and cornea). Patients report pain, avoidance of sunlight (photophobia), tearing (lacrimation) and reddening of the eye. Severe entropion may lead to long-term ocular surface lesions and vision deterioration.