Cylindrical lens is used by a person suffering from

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Q: 72 (CDS-II/2006)
Cylindrical lens is used by a person suffering from

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,16,21,16,9,2,10

keywords: 

{'cylindrical lens': [0, 0, 1, 0], 'astigmatism': [2, 0, 1, 2], 'myopia': [2, 0, 0, 3], 'presbyopia': [0, 0, 0, 1], 'hypermetropia': [0, 0, 0, 1]}