30 在那種情況下角膜弧度儀(keratometer)測出的水平及垂直軸不會相差 90 度?
(A)斜散光(oblique astigmatism)
(B)不規則散光(irregular astigmatism)
(C)順散光(with-the-rule astigmatism)
(D)逆散光(against-the-rule astigmatism)
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統計: A(32), B(247), C(13), D(2), E(0) #1622883
統計: A(32), B(247), C(13), D(2), E(0) #1622883