Write a note on astigmatism and the process by which it can be corrected.
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Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina.Astigmatism may be corrected with eyeglasses, contact lenses, or refractive surgery.
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About:Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina.This results in distorted or blurred vision at all distances.
Symptoms:symptoms can include eyestrain, headaches, and trouble driving at night.
Cause:The cause of astigmatism is unclear.It is believed to be partly related to genetic factors.The underlying mechanism involves an irregular curvature of the cornea or abnormalities in the lens of the eye.
Correction:Astigmatism, like nearsightedness and farsightedness, usually can be corrected with eyeglasses, contact lenses or refractive surgery.
hope it helps
Symptoms:symptoms can include eyestrain, headaches, and trouble driving at night.
Cause:The cause of astigmatism is unclear.It is believed to be partly related to genetic factors.The underlying mechanism involves an irregular curvature of the cornea or abnormalities in the lens of the eye.
Correction:Astigmatism, like nearsightedness and farsightedness, usually can be corrected with eyeglasses, contact lenses or refractive surgery.
hope it helps
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