Which among the following types of lenses are prescribed by doctors for a patient suffering from astigmatism?
Correct answer: A. Cylindrical Lens
- A. Cylindrical Lens
- B. Concave Lens
- C. Spherical Lens
- D. Convex Lens
Explanation
Astigmatism results from unequal curvature in different directions of the cornea or lens, so a cylindrical lens corrects the differing focal powers. Ordinary spherical lenses cannot correct this directional distortion alone.
Last updated
Related questions
A balanced diet quality formula recommended by World Health Organization is ____________.
A bird that can fly backwards?
A blood alcohol level above ________ will often result in death:
A branch of medicine dealing with eyes and related diseases is called_________?
A clouding that develops in the lens of the eye or in its envelope obstructing the passage of light is known as________?