Explain the difference between power and vertex power from basic definitions of optics, and analyze the measuring principle and error of focimeter.
从光学
基础定义出发，阐述光
和顶差别，并对计测量原理和
差进行正确
析。
点计Explain the difference between power and vertex power from basic definitions of optics, and analyze the measuring principle and error of focimeter.
从光学基础定义出发，阐述光和顶差别，并对计测量原理和差进行正确析。
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