又称简约眼或模型眼，是一种简化眼的折光系统而成像的模型眼。为李斯丁（Listing）首先提出。鉴于眼的折光系统太复杂，由角膜、房水、晶状体及玻璃体等组成，而这些折光物质的曲度和折光率又各不相同，因而总的折光率不易计算。
方法根据简化眼屈光学原理，应用几何学计算方法进行后囊有效光学区的面积计算。
Methods According to the refraction of the simplified eye, the posterior capsulorhexis area was calculated by geometric method.
结论这种简化的无晶状体眼硅油取出术简单易行，安全有效。
Conclusions This simplified silicone oil removal surgery for aphakic eyes is simple, safe, effective and deserves to broadcast.
基于人眼分辨率极限的GIS线状数据的简化；
The simplifying of GIS linear data based on limit of resolution ratio of human eye;
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