Enoch J M, Yamade S, Namba A
Doc Ophthalmol. 1979 Sep 17;47(1):147-62. doi: 10.1007/BF00145373.
Measurements of Constrast Sensitivity Functions (CSF) were made on normal observers made artificially highly ametropic with spectacle lenses (with high back vertex) distance in order to determine the effect of retinal image size alterations upon CSF measures. While not an exact model for high ametropia per se, this experiment served to familiarize the experimenters with problems associated with the task. Image size alterations occur normally in aphakic patients and highly myopic patients. As a clinical trial, a series of aphakic observers were tested using an interferometric acuity device. CSF measures were made with the patient's spectacle corrections in place and again with correcting contact lenses substituted. The contact lenses reduce induced image size alterations in these cases. The use of contact lenses in such measures allows differentiation between artifactual low frequency fall off in aphakia due to lens effects and possible low frequency fall-off due to other causes.
为了确定视网膜图像大小改变对对比敏感度函数（CSF）测量的影响，对佩戴（高后顶点）距离眼镜片从而人为造成高度屈光不正的正常观察者进行了CSF测量。虽然该实验本身并非高度屈光不正的确切模型，但有助于实验者熟悉与该任务相关的问题。图像大小改变在无晶状体患者和高度近视患者中通常会出现。作为一项临床试验，使用干涉仪视力设备对一系列无晶状体观察者进行了测试。在患者佩戴眼镜矫正时以及用矫正隐形眼镜替代后再次进行CSF测量。在这些情况下，隐形眼镜可减少诱发的图像大小改变。在这种测量中使用隐形眼镜能够区分由于晶状体效应导致的无晶状体状态下人为低频下降和可能由其他原因引起的低频下降。
