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Abnormalities of eyelid position

Last updated: June 21, 2021

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Eyelid closure allows for the distribution of tear fluid and glandular secretions, which protect the cornea and conjunctiva from dehydration and injury by foreign bodies. Pathological changes in eyelid position (i.e., ptosis, ectropion, entropion, lagophthalmos, and blepharospasm) prevent the complete protection of the cornea and conjunctiva, predisposing affected individuals to complications such as keratitis, conjunctivitis, and corneal ulcers. Treatment such as artificial tears and eye patches, as well as surgical procedures, can be used to help prevent such complications.

For other abnormalities of the eyelids, see “Inflammation of the eyelids” and “Diseases of the lacrimal apparatus.”

For further information on the anatomy of the eyelid, see “Eyelid” in “Eye and orbit.”

For patients with untreated congenital ptosis, surgery is indicated in an early stage due to the risk of developing amblyopia.

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