Measurement of refractive error in Native American preschoolers: Validity and reproducibility of autorefraction
Measurement of refractive error in Native American preschoolers: Validity and reproducibility of autorefraction
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DOI：
10.1097/00006324-200003000-00013
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发表时间：
2000-03-01
影响因子：
1.4
通讯作者：
Davis, AL
中科院分区：
文献类型：
--
作者：
Harvey, EM;Miller, JM;Davis, AL
目的：检查（1）睫状肌麻痹性视网膜检影（C-RNS）、睫状肌麻痹性自动验光（C-Autoref）和非睫状肌麻痹性自动验光（NC-Autoref）的重复性，以及（2）C-Autoref和NC-Autoref与C-RNS相比在学龄前散光儿童中的有效性。方法：研究对象为36名美国原住民学龄前儿童。右眼屈光不正的三个测量值分别用三种方法获得：C-RNS（由三个不同的视网膜镜医师）、C-Autoref和NC-Autoref（Nikon Retinomax K+）。在分析中使用向量方法（向量屈光距离，VDD）。结果：C-RNS、C-Autoref和NC-Autoref的平均重现性分别为0.41 D（SD = 0.18）、0.25 D（SD = 0.17）和0.37 D（SD = 0.21）。C-Autoref和C-RNS之间的平均一致性范围为0.51 - 0.61 VDD（SD = 0.24 - 0.35），NC-Autoref和C-RNS之间的一致性范围为1.66 - 1.74 VDD（SD = 1.11 - 1.25）。C-Autoref和NC-Autoref的平均偏倚分别为-0.07 +0.21 x 149和-1.33 +0.34 x 178。结论：C-Autoref提供了可靠和有效的测量屈光不正的幼儿。NC-Autoref测量在受试者中是可靠的，但受试者之间的有效性存在很大的变异性。
Purpose: To examine (1) reproducibility of cycloplegic retinoscopy (C-RNS), cycloplegic autorefraction (C-Autoref), and noncycloplegic autorefraction (NC-Autoref), and (2) validity of C-Autoref and NC-Autoref compared with C-RNS in preschoolers with astigmatism. Methods: Subjects were 36 Native American preschoolers. Three measurements of right eye refractive error were obtained with each of three methods: C-RNS (by three different retinoscopists), C-Autoref, and NC-Autoref (Nikon Retinomax K+). Vector methods (vector dioptric distance, VDD) were used in the analyses. Results: Mean reproducibility was 0.41 D (SD = 0.18) for C-RNS, 0.25 D (SD = 0.17) for C-Autoref, and 0.37 D (SD = 0.21) for NC-Autoref. Mean agreement between C-Autoref and C-RNS ranged from 0.51 to 0.61 VDD (SD = 0.24 to 0.35), and ranged from 1.66 to 1.74 VDD (SD = 1.11 to 1.25) for agreement between NC-Autoref and C-RNS. Mean bias was -0.07 +0.21 x 149 and -1.33 +0.34 x 178 for C-Autoref and NC-Autoref, respectively. Conclusions: C-Autoref provided reliable and valid measurements of refractive error in young children. NC-Autoref measurements were reliable within subjects, but there was large variability in validity among subjects.