Diplopia can be caused by which of the following conditions?

Diplopia can be caused by which of the following conditions?

• A. Cataracts
• B. Myopia
• C. Weak ocular muscle
• D. Glaucoma

Answer: (C)

Double vision happens when the two eyes aren’t properly aligned and the brain can’t fuse the two images into one. A weak ocular muscle directly disrupts eye alignment, so one eye deviates slightly and each eye sends a different image to the brain, producing diplopia. The other conditions don’t typically cause misalignment: cataracts blur vision because of lens clouding; myopia makes distant objects blurry but doesn’t create two distinct images; glaucoma damages the optic nerve and narrows the visual field rather than causing the eyes to misalign.

Double vision happens when the two eyes aren’t properly aligned and the brain can’t fuse the two images into one. A weak ocular muscle directly disrupts eye alignment, so one eye deviates slightly and each eye sends a different image to the brain, producing diplopia. The other conditions don’t typically cause misalignment: cataracts blur vision because of lens clouding; myopia makes distant objects blurry but doesn’t create two distinct images; glaucoma damages the optic nerve and narrows the visual field rather than causing the eyes to misalign.