What is astigmatism? How is it caused? How can it be corrected?
Answers
Answer:
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Explanation:
Astigmatism:-
The defect by which the person is not able to differentiate horizontal and vertical position, is called astigmatism.
Causes of Astigmatism:-
Astigmatism is caused by an unevenly shaped cornea. The uneven shape causes the rays of light to focus on two points on the retina, causing distortion and blurring of images.
Correction of astigmatism:-
This defect of vision can be rectified by using cylindrical lenses.
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Astigmatism
The defect by which the person is not able to differentiate horizontal and vertical position, is called astigmatism.
Causes of Astigmatism
Astigmatism is caused by an unevenly shaped cornea. The uneven shape causes the rays of light to focus on two points on the retina, causing distortion and blurring of images.