Can corneal abrasions lead to blindness?

Rarely: Very rarely do corneal abrasions lead to a permanent loss of vision - this is usually from a subsequent infection that is not treated quickly. Usually, abrasions heal with either no vision loss or very mild vision changes.

Corneal abrasion: It is rare for corneal abrasions to lead to blindness. If the abrasion becomes infected and is not treated properly it could lead to scarring of the cornea and a decrease in vision.

Scarring: Corneal abrasions, if severe or untreated can lead to corneal infections and scarring which can cause vision loss.

Scars and infection: Corneal abrasions are scratches on the eye's surface. Repeated abrasions in the same area create opaque scars. Additionally, corneal abrasions can lead to infections, which can cause permanent vision loss in the form of scars or damage to the retina (film layer) and optic nerve ("video cable") of the eye.