Physics · Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula
Astigmatism for a human eye can be removed by using an additional:
Astigmatism for a human eye can be removed by using an additional:
- A. concave lens
- B. convex lens
- C. cylindrical lens
- D. prismatic lens
Step-by-step solution
Astigmatism is a defect of vision caused by an irregular curvature of the cornea or lens, resulting in different focal lengths in different meridians. A cylindrical lens has different curvatures in perpendicular directions, enabling it to correct this asymmetry by focusing light properly on the retina.
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