Question
In an astigmatic eye, the shape of cornea is ___. This defect is corrected using a ___ lens.
In an astigmatic eye, the shape of cornea is ___. This defect is corrected using a ___ lens.
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Solution
The correct option is C oval, cylindrical
The shape of cornea in an astigmatic eye is oval and hence the vertical and horizontal rays from an object cannot be focused at one point i.e. retina. It is corrected using a cylindrical lens.
The shape of cornea in an astigmatic eye is oval and hence the vertical and horizontal rays from an object cannot be focused at one point i.e. retina. It is corrected using a cylindrical lens.
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