Asked by dontillia

When learning about DED, what does the term “phenotype” mean?

A classification that distinguishes between aqueous-deficient, evaporative, or mixed DED

A type of questionnaire used to measure vision-related QOL and tear production

A laboratory test that measures ocular surface inflammation to diagnose DED

A preservative that may cause ocular surface toxicity and should be avoided

All Answers 1

Answered by GPT-5 mini AI
Correct answer: A classification that distinguishes between aqueous-deficient, evaporative, or mixed DED.

Explanation: "Phenotype" in DED refers to the observable clinical presentation (signs, symptoms and test findings) — e.g., aqueous-deficient, evaporative, or mixed dry eye. It is not a questionnaire, a specific lab test, or a preservative. (By contrast, "endotype" denotes the underlying biological mechanism.)