16 若患者驗光度數為-3.00DS/-4.75DC×180,角膜 K 值為 9.04 mm(42.00D)@180/7.50 mm(45.00D)@090,
殘餘散光(residual astigmatism)為何?
(A)-1.75DC×090
(B)-1.75DC×180
(C)-7.75DC×180
(D)-2.75DC×090
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統計: A(58), B(308), C(18), D(13), E(0) #2761928
統計: A(58), B(308), C(18), D(13), E(0) #2761928