noun
entropion of the eyelid; palpebral entropion
Medical term for inward turning of the eyelid margin, causing lashes to rub against the eye. The gloss 'palpebral nerve' appears but is likely an error; the correct medical term is entropion.
眼瞼内反は、まつげが角膜を傷つける原因となることがあります。
Entropion of the eyelid can cause the eyelashes to damage the cornea.
眼瞼外反 is ectropion (outward turning of the eyelid), the opposite condition.
Compound of 眼瞼 (eyelid) + 内反 (inward turning). A modern medical term.