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Examining the Validity of a New Method for the Objective Assessment of Binocular Accommodative Facility (2Q-AF Test): A Comparison with ± 2.00 DS Lens Flippers
Current Eye Research ( IF 2 ) Pub Date : 2021-10-06 , DOI: 10.1080/02713683.2021.1962359
Jesús Vera 1 , Beatriz Redondo 1 , George-Alex Koulieris 2 , Rubén Molina 1 , Raimundo Jiménez 1
Affiliation  

ABSTRACT

Purpose

Recent technological advances have permitted to objectively record the accommodative response while shifting between two different levels of accommodation. This study is aimed at examining the concurrent validity of a new objective method for the qualitative and quantitative assessment of binocular accommodative facility, which is named 2Q-AF test, in comparison to the ±2.00 DS lens flippers.

Methods

Fifty-six individuals took part in this study (36 healthy young adults [24.4 ± 3.2 years] and 20 children [12.2 ± 0.4 years]). Participants randomly performed the 2Q-AF and the ±2.00 DS lens flipper tests. For the 2Q-AF test, a binocular open-field autorefractor was used to record the magnitude of accommodative response during a 60-sec period, while participants repeatedly changed fixation from a 5 m to a 40 cm chart when clarity of vision was achieved at each level. Due to the advantages of the proposed method, we have determined the number of cycles and the 2Q-AF score, with the latter also considering the accuracy of changes in accommodation. A standard procedure was followed for the ±2.00 DS flipper test.

Results

Our data exhibited a moderate association between the number of cycles with the ±2.00 DS lens flippers and the number of cycles in the 2Q-AF test in the group of young adults (p = .005, r = 0.46 [0.15–0.68]) and children (p = .007, r = 0.58 [0.19–0.81]), whereas a stronger relationship was observed when considering the number of cycles with the ±2.00 DS lens flippers and the 2Q-AF score (young adults: p < .001, r = 0.83 [0.69–0.91]; and children: p < .001, r = 0.78 [0.52–0.91]).

Conclusions

The current findings show that the 2Q-AF test is a valid method for accommodative facility assessment, as suggested by its good levels of reliability and validity. This method allows to examine the accommodative facility in qualitative terms and solve most of the limitations associated with the ±2.00 DS lens flipper test.



中文翻译:

检查用于客观评估双目调节设施(2Q-AF 测试)的新方法的有效性:与 ± 2.00 DS 镜头翻转器的比较

摘要

目的

最近的技术进步允许客观地记录调节反应,同时在两种不同的调节水平之间转换。本研究旨在检验一种新的客观方法的同时有效性,该方法用于定性和定量评估双目调节设施,即 2Q-AF 测试,与 ±2.00 DS 镜头翻转器进行比较。

方法

56 人参加了这项研究(36 名健康的年轻人 [24.4 ± 3.2 岁] 和 20 名儿童 [12.2 ± 0.4 岁])。参与者随机进行 2Q-AF 和 ±2.00 DS 镜头翻转器测试。对于 2Q-AF 测试,使用双目开场自动验光仪记录 60 秒期间的调节反应幅度,而当在每个级别。由于所提出方法的优势,我们确定了周期数和 2Q-AF 分数,后者还考虑了调节变化的准确性。±2.00 DS 脚蹼测试遵循标准程序。

结果

我们的数据显示,使用 ±2.00 DS 镜头鳍片的周期数与青年组 2Q-AF 测试的周期数之间存在中度关联(p = .005,r = 0.46 [0.15–0.68])和儿童 ( p = .007, r = 0.58 [0.19–0.81]),而在考虑使用 ±2.00 DS 镜头鳍片和 2Q-AF 评分的周期数时观察到更强的关系(年轻人:p < . 001,r = 0.83 [0.69–0.91];儿童:p < .001,r = 0.78 [0.52–0.91])。

结论

目前的研究结果表明,2Q-AF 测试是一种有效的住宿设施评估方法,正如其良好的信度和效度所表明的那样。这种方法可以定性地检查调节设施,并解决与 ±2.00 DS 镜头翻转器测试相关的大部分限制。

更新日期:2021-10-06
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