Definition: A congenital horizontal skin fold near the margin of the eyelid, caused by abnormal insertion of muscle fibers. In the upper lid, it simulates blepharochalasis; in the lower lid, it causes a turning inward of the lashes.
[epi- + G. blepharon, eyelid]
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.