Question

What is the reasons for myopia and hypermetropia and how they can be corrected​

Answer 1

Answer:

Myopia

causes:

• excessive curvature of eye
• eyeball may be too long

the defect can be corrected by using a concave lens

Hypermetropia

causes:

• focal length may be too long
• eyeball may be too short

the defect can be corrected by using a convex lens

Explanation:

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