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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Cylindrical glass is used for:
assistant
The correct answer is  Ans. (d) AstigmatismRef: A.K. Khurana 6th ed. 142-43, Harrison's 19th ed./ 195* Astigmatism is a type of refractive error which arises due to irregular curvature of cornea.* Correction of astigmatism is done by using cylindrical lens.