Assertion : Astigmatism is due to uneven curv | vedclass

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(A) Astigmatism is a vision defect where the cornea or lens has an irregular curvature,causing distorted or blurred vision because light rays do not f

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) Astigmatism is a vision defect where the cornea or lens has an irregular curvature,causing distorted or blurred vision because light rays do not focus at a single point on the retina.Since the curvature is uneven,the eye cannot focus light equally in all meridians.Cylindrical lenses are specifically designed to compensate for this uneven curvature by providing different refractive powers in different meridians.Therefore,both the Assertion and the Reason are correct,and the Reason correctly explains why cylindrical lenses are used to treat astigmatism.

Assertion : Astigmatism is due to uneven curvature of lens.
Reason : It is treated with cylindrical lenses.

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Assertion : Astigmatism is due to uneven curvature of lens.Reason : It is treated with cylindrical lenses.