Which ocular condition is NOT worse in the morning?

Which ocular condition is NOT worse in the morning?

• A. Thyroid Eye Disease
• B. Exposure Keratopathy
• C. Recurrent Corneal Erosion
• D. Myasthenia Gravis

Answer: (D)

The key idea is how symptoms change with use and rest. Myasthenia gravis causes fatigable weakness of the eyelids and extraocular muscles. Because the weakness worsens with use, patients often feel better in the morning after a night of rest, and symptoms like ptosis or diplopia can worsen as the day goes on. So this condition is not worse in the morning. Exposure keratopathy comes from eyelid closure being incomplete during sleep, leading to corneal drying. That overnight exposure produces morning irritation, tearing, and surface changes, so it is typically worse in the morning. Recurrent corneal erosion shows up when the corneal epithelium is brittle after sleep, causing morning pain, tearing, and light sensitivity as the eyelid blinks and disrupts the epithelium. Thyroid eye disease can cause surface exposure and diplopia, but its symptoms don’t have the same consistent morning-worsening pattern as the surface exposure or fatigable weakness conditions.

The key idea is how symptoms change with use and rest. Myasthenia gravis causes fatigable weakness of the eyelids and extraocular muscles. Because the weakness worsens with use, patients often feel better in the morning after a night of rest, and symptoms like ptosis or diplopia can worsen as the day goes on. So this condition is not worse in the morning.

Exposure keratopathy comes from eyelid closure being incomplete during sleep, leading to corneal drying. That overnight exposure produces morning irritation, tearing, and surface changes, so it is typically worse in the morning.

Recurrent corneal erosion shows up when the corneal epithelium is brittle after sleep, causing morning pain, tearing, and light sensitivity as the eyelid blinks and disrupts the epithelium.

Thyroid eye disease can cause surface exposure and diplopia, but its symptoms don’t have the same consistent morning-worsening pattern as the surface exposure or fatigable weakness conditions.