What vision defect occurs when the eyeball is too long or the cornea too curved, focusing parallel light rays in front of the retina?
Answer and explanation
Correct answer: B. Myopia
- Step 1: In an elongated eyeball, the optical system is too powerful for the axial length. Step 2. Distant light rays converge to a focal point in front of the retina, resulting in blurred distance vision (myopia). Answer: Myopia (Short-sightedness). Why not the others: Hypermetropia focuses rays behind the retina; Presbyopia is loss of lens accommodation with aging; Astigmatism is unequal curvature along different meridians.
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More Medical Optics, Electrophysiology and Clinical Radiation questions
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