Closing one eye when viewing objects can be a sign of which condition?

Closing one eye when viewing objects can be a sign of which condition?

• A. Strabismus
• B. Color blindness
• C. Nystagmus
• D. Cataracts

Answer: (A)

Closing one eye to view objects usually signals that the eyes aren’t aligned properly, a condition known as strabismus. When the eyes pull in different directions, the brain may struggle to fuse two images into one, leading to double vision. To avoid this, a person may instinctively close one eye to achieve a single, clearer image. This behavior is distinct from color blindness (difficulty distinguishing colors), cataracts (clouding of the lens causing blurred vision), and nystagmus (involuntary, rhythmic eye movements); none of these typically cause someone to repeatedly shut one eye to see better. In children, strabismus can lead to amblyopia if not addressed, so early detection and treatment—glasses, patching, or surgery as appropriate—are important.

Closing one eye to view objects usually signals that the eyes aren’t aligned properly, a condition known as strabismus. When the eyes pull in different directions, the brain may struggle to fuse two images into one, leading to double vision. To avoid this, a person may instinctively close one eye to achieve a single, clearer image. This behavior is distinct from color blindness (difficulty distinguishing colors), cataracts (clouding of the lens causing blurred vision), and nystagmus (involuntary, rhythmic eye movements); none of these typically cause someone to repeatedly shut one eye to see better. In children, strabismus can lead to amblyopia if not addressed, so early detection and treatment—glasses, patching, or surgery as appropriate—are important.