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[单选题]
被测眼调节幅度为+1.00D,戴老视眼镜+2.50D,焦外区为()。
A.400cm-40cm
B.200cm-36cm
C.100cm-40cm
D.50cm-57cm
查看答案
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A.400cm-40cm
B.200cm-36cm
C.100cm-40cm
D.50cm-57cm
A.( 调节幅度之和的焦点)
B.(调节幅度1/2的焦点)
C.(调节幅度之差的焦点)
D.( 调节幅度1/3的焦点)
A.( 远视处方)
B.(弱视处方)
C.(老视处方)
D.(近视处方)
A.负镜法测量调节幅度8D
B.PRA:-2.50D
C.NRA:+1.00D
D.±2.00D反转拍,单眼5cpm,负镜面用时长
A.调节不足
B.调节灵活度不良
C.调节不持久