ectropion /ektrō″pē·on/ [Gk, ek + trepein, to turn] , eversion, most commonly of the eyelid, exposing the conjunctival membrane lining the eyelid and part of the eyeball. The condition may involve only the lower eyelid or both eyelids. The cause may be paralysis of the facial nerve, scarring, neoplasia, or, in an older person, atrophy of the eyelid tissues. Compare entropion.
