what is myopia? how is it caused? how it can be corrected .draw a diagram to show myopic eye and its correction.
Answers
notice that some people find it easier to see the things which are nearby rather than those which of far away such people are said to be short sighted this is caused due to the of the image in front of the retina this causes a condition called myopia.this defect can be corrected by wearing the concave lenses spectacles
Definition
Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry.
Cause:
Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. This causes light rays to focus at a point in front of the retina, rather than directly on its surface.
Correction:
Myopia is corrected by spectacles or contact lenses with lenses which are 'minus' or concave in shape.
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