21 有一受測者自覺式驗光結果為-1.00DS/-1.00DC×180,其角膜弧度儀檢查結果為 44.50D@180/46.00D@090,
則眼內所殘餘的散光值為何?
(A)-0.50DC×180
(B)-1.00DC×180
(C)+0.50DC×180
(D)+1.00DC×180
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統計: A(137), B(12), C(228), D(4), E(0) #2975530
統計: A(137), B(12), C(228), D(4), E(0) #2975530