人到中年发生老视,需借助老花眼镜来视清近距离目标。对手术科室的医生要配戴老花眼镜,一则哈气不清,二则放大倍数有限,如果加大度数,则距离太近,很不方便。现市面上出售过的放大镜,有的是不易买到,有的是价格太高。为此,我们制作了一种简易眼镜式放大镜,经临床试用,简便实用,特介绍如下。 Occurrence of presbyopia to middle-aged, the need to use presbyopic glasses to clear the close target. Surgery department doctors to wear reading glasses, a breathless, two magnification is limited, if the increase in the number of degrees, the distance is too close, very inconvenient. Now available on the market magnifying glass, some are not easy to buy, and some are too expensive. To this end, we have produced a simple glasses magnifying glass, clinical trial, simple and practical, special introduction is as follows.