EBMD stands for which corneal dystrophy?

• A. Epithelial Basement Membrane Dystrophy
• B. Endothelial Basement Membrane Dystrophy
• C. Epithelial Basal Membrane Degeneration
• D. Endothelial Basal Membrane Dystrophy

Answer: (A)

EBMD is a corneal epithelial dystrophy where the epithelial basement membrane is abnormally thickened and irregular. The best name for this condition is Epithelial Basement Membrane Dystrophy, which directly reflects the layer involved (the epithelium) and the faulty basement membrane beneath it. This abnormal basement membrane causes defective epithelial adhesion, leading to the characteristic map-like patterns, dot-like staining, and fingerprint lines, as well as possible recurrent corneal erosions.

The other phrases imply the wrong tissue or use nonstandard terminology. Endothelial involvement would point toward conditions affecting the inner cornea, like Fuchs’ dystrophy, which presents with edema and guttata rather than surface epithelial irregularities. Degeneration suggests a different process and isn’t the term used for this dystrophy. So the correct understanding is that EBMD stands for Epithelial Basement Membrane Dystrophy.