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瞳孔检影是一种客观测定屈光不正的方法。即先将光束投入被检眼,使视网膜照明,后观察从瞳孔射出来光影特征,用凹凸球镜和凹凸柱镜改变射出来光束的集散度,使之成为聚焦在被检眼前方一米处的集合光束,从而把被检眼的远点移到检影者眼部。把所得球镜和柱镜度数减去+1.00D,即远点移到被检眼前 X 处而得出度数。检影者将检影镜左右转动一二下看到映光向一侧移动,同时有暗影跟踪而来,称为影动。所谓影动:为映光和影的互相变化。目前称映光移动、影动、光影各书记载不一,笔者认为叫光影较结合实际。光影中和标准:1、光影不动为中和;徐宝萃、林胜计等认为影象不再移动时谓之中和。孙桂毓等
Pupography is an objective measure of refractive errors. That is, the first beam into the eye was seized, so that the retina, after the observation of light and shadow emitted from the pupil features, with concave and convex spherical mirror and concave and convex cylinder to change the emission of light beam divergence, making it focused on the eye in front of a meter The collection of light beams, and thus to be seized far point to the eyes of retinoscopy. The resulting spherical and cylinder minus the number of + 1.00D, that is, the distance moved to be seized before the X Department of the degree. Surveying retinoscopy will mirror one or two turn around to see the light to move to the side, while the shadow from tracking, known as the shadow move. The so-called film movement: for the reflection and shadow of each other changes. Currently known as the light moving, shadow moving, light and shadow records vary, I think the light and shade more than the actual. Neutral light and shadow standards: 1, light and shade are neutral; Xu Bao Cui, Lin Sheng-ji and so that the image is no longer moving and that the neutralization. Sun Guiyu and so on