| 18 | 自动验光仪PowerRefractor临床使用的准确性:一项比较性研究显示文摘Background: The aim of this prospective study was to investigate accuracy and efficiency of the autorefractometer PowerRefractor compared to established autorefractometers and retinoscopy as standard method. Patients and Methods: 150 patients (300 eyes) were examined. Patients were initially (pupil not influenced) analyzed with the Power Refractor (PRneutral). After that a examination followed under standardized Cyclopentolat cycloplegia with the Power Refractor (PRcyclo), the hand-held Retinomax K-plus (Nikon), the table-top mounted RK-5 (Canon) and retinoscopy. Results: Deviation from retinoscopy (percentage of values with more than 1 dpt difference/maximal deviation): Sphere: PRneutral: 66,3%/8,5 dpt; PRcyclo: 48%/5 dpt; RK-5: 26,7%/4,75 dpt; Retinomax K-plus: 6,735/1,25 dpt; Cylinder: PRneutral: 12%/6,25 dpt; PRcyclo: 21%/4,75 dpt; RK-5: 1,3%/2,75 dpt; Retinomax K-plus: 2,3%/2,5 dpt; spherical equivalent: PRneutral: 44,7%/7,1 dpt; PRcyclo: 35,3%/5,4 dpt; RK-5: 9%/4,5 dpt; Retinomax K-plus: 1,3%/1,4 dpt; error of entire refraction: PRneutral: 62,7%/7,8 dpt; PRcyclo: 61,3%/7,3 dpt; RK-5: 24%/4,5 dpt; Retinomax K-plus: 14,735/3,6 dpt Conclusions: The best accuracy compared to retinoscopy had Retinomax K-plus followed by RK-5. PowerRefractor had the biggest deviations of the tested devices. PowerRefractor may be a usefull device for screening small children and handicapped people because of the one meter observing distance. For a precise refraction especially in children a retinoscopy under cycloplegic conditions is still necessary. | Schittkowski M. Hucks-Sievers S. Krentz H. Guthoff R. 邢咏新 | 2006 | 世界核心医学期刊文摘(眼科学分册)2006，2，5： | 0 |
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