Entropion (en-TROH-pe-on) is a condition in which your eyelid turns inward so that your eyelashes and skin rub against the eye surface, causing irritation and discomfort.
When you have entropion, your eyelid may be turned in all the time or it may only turn inward when you blink forcibly or tightly squeeze your eyelids shut. Entropion occurs most often in older adults, and it generally affects only your lower eyelid.
Artificial tears and lubricating ointments can help relieve symptoms of entropion, but you'll often need surgery to correct it. Left untreated, entropion can cause damage to the clear part of your eye (cornea), eye infections and vision loss.