消费者对如何配镜,了解得并不很清楚,笔者结合工作实践认为,要配一副称心如意的近视眼镜,应注意以下几个方面的问题: 一、了解眼镜有关的基本常识 1、顶焦度表示的是人眼的屈光不正程度其单位为屈光度(量纲为m~(-1)),符号为D。近视镜用“一”表示,远视镜用“+”表示。如“某戴镜者是近视300度,也就是 Consumers on how to glasses, understand is not very clear, the author combined with the practice that, with a desirable myopia glasses, should pay attention to the following aspects: First, understand the basic knowledge about glasses 1, the top Power refers to the degree of refractive error of the human eye as diopter (dimension m ~ (-1)), the symbol is D. Myopia with “one” said, hyperopia with “+” said. Such as "a wearing lens is 300 degrees of myopia, that is