验光为-4.00-1.25*180,角膜曲率为7.817.90@90,则晶体散光为

验光为-4.00-1.25*180,角膜曲率为7.81/7.90@90,则晶体散光为

A.-315.0

B.-90.0

C.-45.0

D.-22.5

正确答案:A

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