What is the term for the condition where the eyelid turns outward leaving the inner eyelid surface prone to irritation?

Ectropion is the term used for the condition where the eyelid turns outward, exposing the inner surface of the eyelid. This outward turning can lead to irritation and discomfort, as the sensitive inner surface is no longer protected from environmental factors like dust, wind, and chemicals. Patients with ectropion may experience symptoms such as tearing, redness, and a sensation of foreign body in the eye due to the increased exposure and lack of proper lubrication.

This condition is often seen in older adults due to skin laxity, but it can also occur due to injury, surgery, or conditions affecting the facial nerves. Understanding the specific presentation of ectropion helps in differentiating it from conditions like entropion, where the eyelid turns inward, causing irritation to the cornea due to the lashes rubbing against it; or ptosis, which refers to drooping of the upper eyelid without any outward or inward turning. Exophthalmos refers to protrusion of the eyeball, which is not directly related to the position of the eyelids.