Entropion is a condition in which the lower eyelid folds inward so that the eyelashes rub on the surface of the eyeball and the cornea. This creates an irritation and can end with conjunctivitis or corneal ulceration. Persistent entropion can permanently damage the cornea and have harmful effects on vision. Entropion rarely occurs in areas with moderate climate.
This condition affects mostly elderly people. Fibrous tissue in the upper lids becomes flaccid, allowing excessive muscle contraction at the edge of the lids and folding inward, toward the eye. Entropion occurs at any age and the cause is some previous condition with eye irritation (like conjunctivitis) that causes folding the the eyelids, not muscle weakness.
What to do?
If it is an earlier eye irritation, contact your doctor to treat it. Otherwise, pull the lid outward, hold it, and attach one part of the patch to the skin beneath the lower eyelashes and the other part on the cheek. After a few days remove the patch and check if the condition improves. If the condition does not improve, contact a doctor who can remedy this with a minor surgical procedure (usually under local anesthesia).