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用Amsler方格表,检查12名22眼患糖尿病有视力下降而无视网膜病变患者的视野损害情况。所用Amsler方格表的明暗度由强至弱四种顺序为标准白、鲜红、浅红及阈强度。阈强度系用交叉偏振透镜降低,使标准方格表的白格子刚刚能被看见。检出暗点的总面积随Amsler表强度降低而增加,而视物变形则随其强度降低而减少。12名患者接受了全面眼科检查。17眼(71%)视力为20/20,余者为20/50或更好。8眼眼底正常,12眼无视网膜病变,但黄斑光反射减弱,2眼有明显的黄斑水
Using the Amsler grid table, visual field damage in 12 patients with diabetic retinopathy was examined in 12 eyes. The brightness of the Amsler grid table used is in the order of strong white to weak white, bright red, light red, and threshold intensity. The threshold intensity is reduced with a crossed-polarizing lens so that the white grid of a standard grid can be seen just right away. The total area of dark spots detected increases with decreasing Amsler table intensity, while the apparent distortion decreases with decreasing intensity. Twelve patients underwent a full-blown eye exam. 17 eyes (71%) had a visual acuity of 20/20 and the remaining 20/50 or better. 8 eyes normal, 12 eyes without retinopathy, but weakened macular reflex, 2 eyes had significant macular