Elam J H
Low Vision Clinic Southern College of Optometry, Memphis, TN 38104, USA.
J Am Optom Assoc. 1997 Jan;68(1):31-6.
Data were analyzed from 25 consecutive patient visits to the Low Vision Rehabilitation Service at Southern College of Optometry, during which magnification for near was recommended.
Linear regressions with analysis of variances were calculated for the results obtained from four near-different near-magnification prediction-calculation methods to determine how accurately they predicted the final near recommended magnifications. A t-test was performed to look for mean differences between calculation methods.
No significance was found between the means of three of the calculation methods; a significant difference was found for one. However, all four near-magnification calculation methods significantly predicted final near magnification.
Low-vision rehabilitation clinicians may feel comfortable using any of the four near-magnification methods Choice of method may be a reflection of previous method usage by the clinician. Use of the Lighthouse Near Acuity Test Chart reduces the need to calculate the near-magnification power with which to begin near-magnification testing.
对连续25例到南方验光学院低视力康复服务中心就诊的患者数据进行了分析，期间推荐了近用放大倍率。
对四种不同的近用放大倍率预测计算方法所得结果进行方差分析的线性回归，以确定它们预测最终近用推荐放大倍率的准确程度。进行t检验以查找计算方法之间的均值差异。
三种计算方法的均值之间未发现显著差异；有一种发现了显著差异。然而，所有四种近用放大倍率计算方法都能显著预测最终近用放大倍率。
低视力康复临床医生使用四种近用放大倍率方法中的任何一种可能都会感到放心。方法的选择可能反映了临床医生以前使用的方法。使用灯塔近视力测试图减少了计算开始近用放大倍率测试所需的近用放大倍率的需求。
