Astigmatism is developed when

Lens become opaque

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Curvature of conjunctiva is changed

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Lens become nonflexible

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Curvature of cornea is changed

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Solution

The correct option is D Curvature of cornea is changed
Astigmatism is caused by an irregular curvature of the eye's cornea or lens. This can change the way to pass light and causes blurry or distorted vision. It is characterized by the difficulty seeing at night, eyestrain, eye irritation and headaches. It can be corrected by using spherical cylindrical glasses/contact lenses or laser surgery. Hence, the correct answer is option D.

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Similar questions

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

Which part of the eye is grafted in a needy patient from a donated eye ?
(a) Conjunctiva (b) Cornea
(c) Choroid (d) Ciliary muscles

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