MCQ
Myopia is a defect of vision caused by:
- AA decrease in the retinal distance from the lens.
- BA decrease in the diameter of the eyeball.
- CAn increase in the thickness of the lens.
- ✓An increase in the curvature of the lens.
✓
Answer
Correct option: D.
An increase in the curvature of the lens.
In a myopic eye, the image of distant objects is formed in front of the retina and not on the retina, as shown in the given figure. Since eye lens is convex, all parallel rays converge at its focus. This is a clear indication of the shortening of the focal length of a myopic eye lens.
As a result, the curvature of the lens gets increased. Hence, myopia is caused by an increase in the curvature of the eye lens.
As a result, the curvature of the lens gets increased. Hence, myopia is caused by an increase in the curvature of the eye lens.
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