题目内容
(请给出正确答案)
[单选题]
等效球镜公式F=Fe/(1-dFe)中,d表示(),默认值为()。
A.光学中心距,0.012m
B.镜眼距,0.012m
C.瞳距,0.12m
D.镜眼距,0.12m
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A.光学中心距,0.012m
B.镜眼距,0.012m
C.瞳距,0.12m
D.镜眼距,0.12m
A.等效球镜屈光度等于+6.00D
B.为等效球镜屈光度≥—6.00D或眼轴长度≥26.0mm;
C.等效球镜屈光度≥+6.00D
D.等效球镜屈光度小于6.00D或眼轴长度小于26.0mm
A.等效球镜=球镜度+1/2柱镜度
B.散光<0.75D,球柱比>3:1
C.散光>1.00D,球柱比>4:1
D.散光>2.00D,球柱比>5:1
A.等效球镜=球镜度+1/2柱镜度
B.散光<0.75D,球柱比>2:1
C.散光>1.00D,球柱比>3:1
D.散光>2.00D,球柱比>3:1
A.-5.25-3.75×180
B.-6.00-2.25×180
C.-5.25-3.50×180
D.-5.50-3.75×180