Sometimes there is a shortage of conjunctival lining in the socket which causes the upper eyelid to curl downward and inward. This results in the upper eyelashes pointing downward and often sticking to the surface of the prosthesis. As well as looking odd, the sticking lashes are a nuisance – they become messy and cannot be cleaned easily.
The surgical procedure for correcting upper lid entropion involves two incisions, a shallow one just beneath the lashes inside the lid margin and a second one along the upper eyelid crease. A wedge is cut out of the anterior tarsal surface and when this is sutured closed the lid straightens and the lashes turn up.