In an astigmatic eye, the shape of the cornea is _. This defect is corrected using a _ lens.

spherical, convex

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oval, convex

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oval, cylindrical

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spherical, cylindrical

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Solution

The correct option is C oval, cylindrical
The shape of the cornea in an astigmatic eye is oval and hence the vertical and horizontal rays from an object cannot be focused at the same point on retina. It is corrected using a cylindrical lens.

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In an astigmatic eye, the shape of cornea is ___. This defect is corrected using a ___ lens.

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