EDED stands for evaporative dry eye disease.

• A. Exudative dry eye disease
• B. Evaporative dry eye disease
• C. Endothelial dryness and dehydration
• D. Exacerbated dry eye disease

Answer: (B)

Understanding abbreviations in ocular surface disease helps you recognize the mechanism behind the term. EDED stands for evaporative dry eye disease, describing a form of dry eye where tear film breakup is driven mainly by rapid evaporation. This typically results from a deficient lipid layer produced by the Meibomian glands or eyelid dysfunction that increases tear evaporation, leading to instability and irritation of the ocular surface. The other interpretations don’t fit established terminology: exudative dry eye disease would imply fluid leakage rather than rapid tear evaporation, endothelial dryness and dehydration isn’t a recognized description of dry eye physiology, and exacerbated dry eye disease isn’t a standard diagnostic term.