What is the term for an eye condition where the eyelids do not close completely?

The condition where the eyelids do not close completely is known as lagophthalmos. This term specifically refers to the inability to fully close the eyelids, which can lead to exposure of the cornea and increase the risk of dry eyes, irritation, and other complications. Lagophthalmos can occur due to various factors, including nerve damage, eyelid surgery, or anatomical abnormalities.

Understanding this condition is crucial in ophthalmic practice, as it can impact patient comfort and ocular health significantly. Proper management may involve artificial tears, protective eyewear, or surgical interventions to improve eyelid closure and protect the cornea.

In contrast, blepharitis is an inflammation of the eyelid margins, and while it can cause discomfort, it does not specifically relate to eyelid closure. Ptosis refers to the drooping of the upper eyelid and does not necessarily imply incomplete closure of the eyelids. Conjunctival prolapse refers to the displacement of the conjunctiva and does not pertain to eyelid closure either. Thus, lagophthalmos is the most accurate term for the issue described.