CLARO (Clinical and Laboratory Applications of Research in Optometry) Research Group, Department of Optics, Faculty of Sciences, University of Granada, Granada, Spain.
Department of Computer Science, Durham University, Durham, UK.
Curr Eye Res. 2022 Jan;47(1):62-68. doi: 10.1080/02713683.2021.1962359. Epub 2021 Oct 6.
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.
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.
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 ( = .005, r = 0.46 [0.15-0.68]) and children ( = .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: < .001, r = 0.83 [0.69-0.91]; and children: < .001, r = 0.78 [0.52-0.91]).
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.
最近的技术进步使得在两种不同的调节水平之间客观地记录调节反应成为可能。本研究旨在检查一种新的客观方法的同时效性，该方法用于定性和定量评估双眼调节灵活性，称为 2Q-AF 测试，与±2.00 DS 镜片翻转器相比。
56 人参加了这项研究（36 名健康的年轻成年人[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 镜片翻转器测试。对于 2Q-AF 测试，使用双目开放式自动折射仪记录 60 秒期间的调节反应幅度，当在每个水平获得清晰的视力时，参与者反复将注视从 5 米转移到 40 厘米图表。由于该方法的优势，我们确定了循环次数和 2Q-AF 得分，后者还考虑了调节变化的准确性。遵循标准程序进行±2.00 DS 翻转器测试。
我们的数据显示，在年轻成年人组中，±2.00 DS 镜片翻转器的循环次数与 2Q-AF 测试的循环次数之间存在中度相关性（=0.005，r=0.46[0.15-0.68]）和儿童（=0.007，r=0.58[0.19-0.81]），而当考虑±2.00 DS 镜片翻转器的循环次数和 2Q-AF 得分时，观察到更强的相关性（年轻成年人：<0.001，r=0.83[0.69-0.91]；儿童：<0.001，r=0.78[0.52-0.91]）。
目前的研究结果表明，2Q-AF 测试是一种有效的调节灵活性评估方法，因为其具有良好的可靠性和有效性。该方法允许定性评估调节灵活性，并解决与±2.00 DS 镜片翻转器测试相关的大多数限制。
