Which eye condition is described as a condition in which the eye does not focus properly because of uneven curvatures of the cornea?

Which eye condition is described as a condition in which the eye does not focus properly because of uneven curvatures of the cornea?

• A. Near-sighted
• B. Astigmatism
• C. Far-sighted
• D. Plane mirror

Answer: (B)

Light must be focused onto the retina by a smooth, evenly curved surface. When the cornea has uneven curvature in different directions, light rays bend differently depending on the direction. This means light doesn’t converge to a single point on the retina and the image can be blurry or distorted, at any distance. That condition is called astigmatism. It’s different from nearsightedness, where the eye focuses light too soon in front of the retina, or farsightedness, where focus is behind the retina, both due to the overall shape or length of the eye rather than uneven corneal curvature. A plane mirror isn’t related to how the eye focuses light.

Light must be focused onto the retina by a smooth, evenly curved surface. When the cornea has uneven curvature in different directions, light rays bend differently depending on the direction. This means light doesn’t converge to a single point on the retina and the image can be blurry or distorted, at any distance. That condition is called astigmatism. It’s different from nearsightedness, where the eye focuses light too soon in front of the retina, or farsightedness, where focus is behind the retina, both due to the overall shape or length of the eye rather than uneven corneal curvature. A plane mirror isn’t related to how the eye focuses light.