What condition could occur if one eye has a refractive error of OD -1.00 and the other has OS -2.25?

• A. Anisometropia
• B. Ametropia
• C. Amblyopia
• D. Aniseikonia

Answer: (A)

The condition that could occur when one eye has a refractive error of -1.00 and the other has -2.25 is anisometropia. Anisometropia is characterized by a significant difference in the refractive power between the two eyes, leading to variations in how light is focused. In this case, the difference of 1.25 diopters between the two eyes qualifies as a refractive disparity.

This difference in refractive error can cause issues such as unequal visual acuity and challenges in binocular vision, as the brain may struggle to merge the two differing images from each eye. It's important to address and correct anisometropia to maintain proper visual function and prevent complications such as amblyopia, which can arise if one eye is consistently favored over the other due to this discrepancy.