write type of defect do you find in human eye when curvature of cornea and the eye lens increases.
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(i) Myopia: Short-sightedness is caused due to excessive curvature in cornea or elongation of eyeball. Image is formed before of the retina. So, a concave lens is used to correct it. (ii) Astigmatism: The inability to focus the light in both vertical and horizontal lines is called astigmatism.
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