______ is a group of non-specific symptoms including blurred vision, intermittent diplopia, eye pain, eye strain or fatigue, and headaches that occur during or after the completion of visual tasks.

• A. Asthenopia
• B. Myopia
• C. Amblyopia
• D. Diplopia

Answer: (A)

Asthenopia, or eyestrain, is the group of non-specific symptoms that arise with sustained near work or visual tasks. The list—blurred vision, intermittent double vision, eye pain, eye strain or fatigue, and headaches during or after these tasks—fits this syndrome because it reflects strain on the visual system rather than a single refractive error or a specific eye disease. It often stems from a mismatch or fatigue in accommodation and vergence, or from uncorrected refractive error, binocular vision dysfunction, or ocular surface irritation.

The other options don’t form this symptom cluster. Myopia is primarily about distance blur and isn’t defined by this near-task discomfort pattern. Amblyopia is reduced vision from cortical suppression, not typically described as a transient cluster of strain-associated symptoms during tasks. Diplopia is double vision itself, which is just one symptom and not the broad set described.