18 患者屈光不正處方為+3.00D/-3.50DC×180,而鏡片前表面屈光力為+5.00 D,則鏡片的後表面屈光力為何?
(A)-5.50D/+3.50DC×180
(B)-2.00D/-3.50DC×090
(C)-5.50D/+3.50DC×090
(D)-2.00D/+3.50DC×090
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統計: A(9), B(19), C(173), D(18), E(0) #3497676
統計: A(9), B(19), C(173), D(18), E(0) #3497676