lagophthalmos
Pronunciation: lag-of-THAL-mohs
Inability to close the eyelids completely, exposing part of the cornea and conjunctiva.
Full Definition
Lagophthalmos is the incomplete closure of the eyelids, resulting in exposure of the ocular surface even when attempting to close the eyes completely. This condition can be caused by facial nerve palsy, eyelid scarring, previous surgery, or cicatricial processes affecting eyelid function. The persistent exposure leads to drying of the cornea and conjunctiva, potentially causing keratitis, corneal ulceration, and vision loss if left untreated. Management may include lubricating treatments, taping, protective eyewear, or surgical interventions such as eyelid weights, tarsorrhaphy, or eyelid reconstruction.
Usage
Usage note: Measure and document the degree of exposure in millimeters. Often requires urgent corneal protection.
In Context
- "The patient's lagophthalmos secondary to facial palsy required urgent corneal protection." — Emergency consultation
- "Gold weight implantation successfully corrected the lagophthalmos and improved corneal health." — Surgical treatment outcome