Abnormalities of eyelid position

Last updated: October 19, 2023

Summarytoggle arrow icon

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.”

Anatomy of the eyelidtoggle arrow icon

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

Ptosistoggle arrow icon

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

Ectropiontoggle arrow icon

Entropiontoggle arrow icon

Lagophthalmostoggle arrow icon

Blepharospasmtoggle arrow icon

Referencestoggle arrow icon

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