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Entropion is a medical condition in which the eyelid (usually the lower lid) folds inward. It is very uncomfortable, as the eyelashes constantly rub against the cornea and irritate it. Entropion is usually caused by genetic factors and very rarely it may be congenital when an extra fold of skin grows with the lower eyelid (epiblepharon){Citation n...
inversion of the edge of the eyelid
• (n.) Same as Entropium.
A complex genetic condition that results in the turning in of the upper or lower eyelid, potentially resulting in corneal ulceration.
inward turning of the border (or margin) of the eyelid (usually the lower eyelids), occurring most often in elderly persons. It is commonly caused by ... [1 related articles]
Turning inward of the eyelid against the eyeball. 
<ophthalmology> Inversion or turning inward of the border of the eyelid against the eyeball. ... (11 Nov 1997) ... 
(en-tro´pe-on) the turning inward (inversion) of a margin. specifically, abnormal turning inward of an eyelid. entropion uveae inversion of the margin of the pupil.
En·tro'pi·on noun [ New Latin ] (Medicine) Same as Entropium . 
(en-TROH-pee-un) Inward turning of upper or lower eyelid so that the lid margin rests against and rubs the eyeball
Type: Term Pronunciation: en-trō′pē-on, -pē-ŭm Definitions: 1. Inversion or turning inward of a part. 2. The infolding of the margin of an eyelid.
A turning in of the eyelid such that the eyeball is irritated by the hair and wool.
Turning in of an eyelid
A complex genetic condition that results in the turning in of the upper or lower eyelid, potentially resulting in corneal ulceration.
Inversion or turning inward.
a heritable trait in which the lower eyelid is inverted, causing the eyelashes of the lower lid to brush against the eye.