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为了解当前学生配戴眼镜的质量卫生状况,我们于1990年9月按轻工业部眼镜标准QB954-85,对我市207付眼镜进行了质量卫生调查。结果表明,四项检测指标(镜片屈光度光学中心距、瞳距、光学中心移位)全合格的只有3付,合格率占1.45％。其中双侧镜片屈光度合格率占16.43％,单侧镜片屈光度合格率占25.85％;屈光度误差范围超标平均为-0.46D,最大误差为-2.00D,超过标准25倍;实测学生瞳距与镜片光学中心距
In order to understand the current quality of students wearing glasses, health conditions, we in September 1990 by the Ministry of Light Industry glasses standard QB954-85, 207 glasses to our city for quality and health surveys. The results show that the four test indicators (lens diopter optical center distance, IPD, optical center shift) all qualified only 3 pay, pass rate of 1.45%. Including double lens refraction pass rate of 16.43%, unilateral lens refraction pass rate of 25.85%; diopter error range exceeded the average of -0.46D, the maximum error of -2.00D, exceeding the standard 25 times; measured interpupillary distance and lens optics Center distance