Why is a Convex lens used to correct hypermetropia or long-sightedness?
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convex lens helps to correct hypermetropia by make the light rays to fall on the retina
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The cure for the farsighted eye centers around assisting the lens in refracting the light. Since the lens can no longer assume the convex and highly curved shape that is required to view nearby objects, it needs some help. ... Because the eyeball is shortened, the retina lies closer than usual to the cornea and lens.
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