In which of the following is the surface of the cornea curved more steeply on one side of the eye than on the other,so there is no single point of focus?

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Astigmatism is a condition where the surface of the cornea is curved more steeply on one side than on the other, leading to unequal bending of light and no single point of focus. Hyperopia (farsightedness) and myopia (nearsightedness) both involve a single point of focus but in different locations, while amblyopia is a condition where the brain and the eyes don't work together properly, leading to reduced vision in one or both eyes.

In Which of the Following Is the Surface of the Cornea