Abnormal narrowing or constriction of the eyelid opening.
From Greek blepharon (eyelid) + stenosis (narrowing). This medical term combines the anatomical term with the pathological condition of reduced size or opening, developing in clinical medicine to describe restrictive eyelid conditions.
Blepharostenosis can happen from scarring due to Stevens-Johnson syndrome or ocular cicatricial pemphigoid, conditions where the eyelid actually shrinks and tightens—it's painful and can harm vision if the eye doesn't open enough.
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