An entropion is an inward-turning lower eyelid. This causes the eyelashes to rub against the eyeball, potentially damaging the cornea. The scratching hairs can cause irritation, a sensation of having sand in the eye, or sensitivity to bright light. If the condition causes only minor complaints or when surgery is not advisable, the eyelid can sometimes be held in a good position with adhesive tape.
An ectropion is an outward-turning lower eyelid. This causes the mucous membrane, which is normally on the inside of the eyelid, to become visible and irritated. You may experience eye irritation and tearing. The eye can also become sensitive to bright light and wind. If the condition causes only minor complaints or when surgery is not advisable, the eyelid can sometimes be held in a good position with adhesive tape.