Which statement best describes how NIBUT values change with EDED?

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Study for the ACVIM Small Animal Internal Medicine Exam to enhance your veterinary knowledge. Prepare with flashcards and multiple-choice questions, featuring hints and explanations. Ensure success in your exam journey!

Multiple Choice

Which statement best describes how NIBUT values change with EDED?

Explanation:
Tear film stability is reduced in evaporative dry eye, so the noninvasive tear break-up time becomes shorter. In healthy eyes the tear film stays intact longer, giving a longer NIBUT. In evaporative dry eye disease, lipid layer dysfunction from Meibomian gland issues leads to faster evaporation and quicker tear film breakup, resulting in a shorter NIBUT. Therefore, the statement that NIBUT is shorter in eyes with evaporative dry eye disease than in healthy eyes best describes the reality. NIBUT can still be measured in diseased eyes; it simply reflects the unstable tear film rather than being unaffected by disease.

Tear film stability is reduced in evaporative dry eye, so the noninvasive tear break-up time becomes shorter. In healthy eyes the tear film stays intact longer, giving a longer NIBUT. In evaporative dry eye disease, lipid layer dysfunction from Meibomian gland issues leads to faster evaporation and quicker tear film breakup, resulting in a shorter NIBUT. Therefore, the statement that NIBUT is shorter in eyes with evaporative dry eye disease than in healthy eyes best describes the reality. NIBUT can still be measured in diseased eyes; it simply reflects the unstable tear film rather than being unaffected by disease.

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