Comparison of applicability of different visual acuity charts for pediatric outpatient visual tests.

眼科学报 Pub Date : 2014-06-01

Haili Fang, Hongxing Diao, Linxing Chen, Junwen Zeng

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引用次数: 0

Abstract

Purpose: To evaluate the applicability of different visual acuity charts for outpatient pediatric visual tests.

Methods: Fifty-three children (53 eyes) aged 4-8 years undergoing visual acuity tests as outpatients were randomly selected for this study. The best corrected visual acuity (BCVA) of the eye with better visual acuity was measured for each child using the digital LogMAR visual chart, the ETDRS visual chart, and a new standard logarithm visual chart; all measurements were repeated twice and the BCVA was recorded. Paired comparisons were made between the LogMAR visual acuity chart and ETDRS chart measurements or between the ETDRS chart and logarithm visual acuity chart measurements for statistical analysis of the differences in measurement of visual acuity. The results of different measurements by the same chart were compared to evaluate the consistency of the measurement results. Bland-Altman analysis was employed to evaluate the most suitable chart for outpatient measurement of visual acuity in children.

Results: Bland-Altman analysis revealed that the mean visual acuity measured was (0.447 ± 0.017 LogMAR) by the digital LogMAR chart, (0.301 ± 0.024 LogMAR) by the standard logarithm visual acuity chart, and (0.309 ± 0.018 LogMAR) by the ETDRS visual acuity chart. The BCVA was significantly lower when measured by the LogMAR visual acuity chart than by the ETDRS chart (P < 0.01). The BCVA was slightly higher when measured by the logarithm visual acuity chart than by the ETDRS chart, but the difference was not statistically significant (P > 0.05). The Bland-Altman plot showed that the highest consistency was obtained with the digital LogMAR chart, with a difference between two repeated measurements of 0.068 LogMAR, compared to 0.090 and 0.072 LogMAR for the logarithm and ETDRS visual acuity charts, respectively.

Conclusion: All three types of visual acuity charts are applicable for outpatient measurement of pediatric visual acuity. The ETDRS and logarithm visual acuity charts have a higher consistency, but the LogMAR visual acuity chart shows better reproducibility. Consequently, it is difficult to identify and distinguish which acuity chart is most suitable for cooperative children.

本刊更多论文

不同视力表在儿科门诊视力检查中的适用性比较。

目的:评价不同视力表在门诊儿童视力检查中的适用性。方法:随机选择53例(53眼)4 ~ 8岁的儿童作为门诊患者进行视力检查。采用数字LogMAR目视表、ETDRS目视表和新标准对数目视表对每个患儿视力较好眼的最佳矫正视力(BCVA)进行测量;所有测量重复两次，记录BCVA。将LogMAR视力表与ETDRS视力表测量值或ETDRS视力表与对数视力表测量值进行配对比较，统计分析视力表测量值的差异。将同一图表的不同测量结果进行比较，评价测量结果的一致性。采用Bland-Altman分析法评价门诊儿童视力测量最适合的图表。结果:Bland-Altman分析显示，数字对数视度表测得的平均视力为(0.447±0.017 LogMAR)，标准对数视度表测得的平均视力为(0.301±0.024 LogMAR)， ETDRS视度表测得的平均视力为(0.309±0.018 LogMAR)。使用LogMAR视力表测量BCVA明显低于ETDRS视力表(P < 0.01)。对数视度表测量的BCVA略高于ETDRS视度表，但差异无统计学意义(P > 0.05)。Bland-Altman图显示，数字LogMAR图的一致性最高，两次重复测量之间的差异为0.068 LogMAR，而对数和ETDRS视力图的差异分别为0.090和0.072 LogMAR。结论:三种视力表均适用于门诊儿童视力测量。ETDRS与对数视力表具有较高的一致性，而LogMAR视力表具有较好的再现性。因此，很难识别和区分哪种视力表最适合合作儿童。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

眼科学报

自引率

0.00%

发文量

1312

期刊介绍： Eye science was founded in 1985. It is a national medical journal supervised by the Ministry of Education of the People's Republic of China, sponsored by Sun Yat-sen University, and hosted by Sun Yat-sen University Zhongshan Eye Center (in October 2020, it was changed from a quarterly to a monthly, with the publication number: ISSN: 1000-4432; CN: 44-1119/R). It is edited by Ge Jian, former dean of Sun Yat-sen University Zhongshan Eye Center, Liu Yizhi, director and dean of Sun Yat-sen University Zhongshan Eye Center, and Lin Haotian, deputy director of Sun Yat-sen University Zhongshan Eye Center, as executive editor. It mainly reports on new developments and trends in the field of ophthalmology at home and abroad, focusing on basic research in ophthalmology, clinical experience, and theoretical knowledge and technical operations related to epidemiology. It has been included in important databases at home and abroad, such as Chemical Abstract (CA), China Journal Full-text Database (CNKI), China Core Journals (Selection) Database (Wanfang), and Chinese Science and Technology Journal Database (VIP).