题目内容 (请给出正确答案)
提问人:网友c********1 发布时间:2022年12月5日 22:23
[单选题]

调整观察角度,使读窗内的长线恰好落在读窗外框中央的突角连线上。若被测眼角膜前顶点与读窗的中央长线刻度相切.则提示镜眼距为()

A.12.75mm B.13.75mm C.14.75mm D.15.75mm

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