Concept:Myopia is a refractive eye defect in which distant objects appear blurred because the image forms in front of the retina.
Explanation:In the diagram, parallel rays of light from a distant object are focused before they reach the retina.
This happens when the eyeball is too long or the cornea is too curved.
As a result, the image forms in front of the retina instead of exactly on it.
Therefore, a person with this defect cannot see distant objects clearly.
This condition is called myopia, also known as short-sightedness.
Myopia can be corrected using a concave lens which diverges the light rays slightly.
This causes the image to fall exactly on the retina.
The defect shown is not hypermetropia, astigmatism, or presbyopia.
Answer:D. myopia
