In Fuchs endothelial dystrophy, the blurry vision is typically worse at what time of day?

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Prepare for the NBEO Part III Test with comprehensive questions on Patient Encounters and Performance Skills. Answer multiple choice and scenario-based questions with explanations. Ensure success on your optometry exam!

Multiple Choice

In Fuchs endothelial dystrophy, the blurry vision is typically worse at what time of day?

Explanation:
In Fuchs endothelial dystrophy, the inner endothelial layer of the cornea can’t pump fluid out effectively. Overnight, with the eyelids closed, fluid accumulates in the cornea, causing edema and more light scattering, which makes vision hazy when you wake up. As the day goes on, blinking and the tear film help remove some of that fluid, so the cornea clears a bit and vision improves. So the time of day when blur is most pronounced is in the morning.

In Fuchs endothelial dystrophy, the inner endothelial layer of the cornea can’t pump fluid out effectively. Overnight, with the eyelids closed, fluid accumulates in the cornea, causing edema and more light scattering, which makes vision hazy when you wake up. As the day goes on, blinking and the tear film help remove some of that fluid, so the cornea clears a bit and vision improves. So the time of day when blur is most pronounced is in the morning.

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