Corneal Defects (Abrasion, Laceration, & Ulceration)

Corneal abrasion refers to a defect on the corneal surface due to mechanical trauma but is often used more widely to encompass any defect on the cornea (regardless of etiology). Corneal laceration refers to a cut into the cornea (deeper than an abrasion). Corneal ulceration refers to a corneal epithelial defect that progresses into the stroma and can ultimately involve the full thickness of the cornea. Descemetocele refers to herniation of the Descemet’s membrane through the corneal defect or a bulging forward of Descemet’s membrane. Typically surrounded by a cicatricial ring. See: EyeRounds.org for examples of a descemetocele and an accompanying cicatricial ring.