What are refractive errors in vision primarily due to?
A. Changes in the auditory canal.
B. Alterations in the shape of the cornea or lens.
C. Damage to the optic nerve.
D. Fluctuations in ambient lighting.
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What is myopia and how does it affect vision?
A. A condition where distant objects appear blurry because the eyeball is too short.
B. A condition where distant objects appear blurry because the eyeball is too long.
C. A condition where near objects appear blurry because the eyeball is too long.
D. A condition where near objects appear blurry because the eyeball is too short.
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