Liu Ziming, Pazo Emmanuel Eric, Ye Hong, Yu Cui, Xu Ling, He Wei
He Eye Specialist Hospital, Shenyang, China.
Liaoning University of Traditional Chinese Medicine, Shenyang, China.
J Ophthalmol. 2021 May 21;2021:6612476. doi: 10.1155/2021/6612476. eCollection 2021.
To assess the repeatability and agreement of refractive measurements using 2WIN-S photoscreening with the gold-standard cycloplegic retinoscope refraction.
Single centre, cross-sectional study.
Spherical, cylindrical, axis, and spherical equivalent of 194 bilateral eyes of 97 children were assessed using a retinoscope and 2WIN-S. One week later, another operator repeated the 2WIN-S measurements. The primary outcome measures were to assess the repeatability and agreement between spherical equivalent, J0, and J45 readings of 2WIN-S. The repeatability of measurements was assessed by the within-subject standard deviation (2.77 Sw) and intraclass correlation coefficient (ICC). The agreement between devices was assessed using 95% limits of agreement. The extent of the agreement between cycloplegic retinoscopy and noncycloplegic 2WIN-S measurements was assessed using Bland-Altman analysis.
The mean age ± SD was 10.3 ± 2.46 year (range, 4-14 years). The sphere, cylinder, and spherical equivalent measurements were found to be consistent with both apparatus ( value >0.86). ICC for SE, J0, and J45 was 0.900, 0.666, and 0.639, respectively; Sw for SE, J0, and J45 was 0.61D, 0.30D, and 0.31D, respectively; Bland-Altman analysis of retinoscopy with cycloplegia and 2WIN-S for SE was 184/194 (95%) in 95% confidence interval, and the mean value was 0.46. J0 was 184/194 (95%), and the mean value is -0.04. J45 was 181/194 (93%), and the mean value is -0.15.
The objective refractive measurement of 2WIN-S had good reliability and high agreement with the gold-standard retinoscopy refraction in children and adolescents. While consistency was observed, it is essential to take into consideration that it is a screening tool.
使用2WIN-S照片筛查仪评估屈光测量的可重复性以及与金标准睫状肌麻痹视网膜检影验光的一致性。
单中心横断面研究。
使用视网膜检影镜和2WIN-S照片筛查仪对97名儿童的194只双眼进行球镜、柱镜、轴位和等效球镜度数的评估。一周后，另一名操作人员重复进行2WIN-S测量。主要观察指标是评估2WIN-S照片筛查仪等效球镜、J0和J45读数之间的可重复性和一致性。测量的可重复性通过受试者内标准差（2.77 Sw）和组内相关系数（ICC）进行评估。使用95%一致性界限评估仪器之间的一致性。使用Bland-Altman分析评估睫状肌麻痹视网膜检影验光与非睫状肌麻痹2WIN-S测量之间的一致性程度。
平均年龄±标准差为10.3±2.46岁（范围4 - 14岁）。发现球镜、柱镜和等效球镜测量在两种仪器上结果一致（值>0.86）。等效球镜、J0和J45的ICC分别为0.900、0.666和0.639；等效球镜、J0和J45的Sw分别为0.61D、0.30D和0.31D；睫状肌麻痹视网膜检影验光与2WIN-S照片筛查仪等效球镜度数的Bland-Altman分析在95%置信区间内为184/194（95%），平均值为0.46。J0为184/194（95%），平均值为 -0.04。J45为181/194（93%），平均值为 -0.15。
2WIN-S照片筛查仪的客观屈光测量在儿童和青少年中具有良好的可靠性，与金标准视网膜检影验光具有高度一致性。虽然观察到了一致性，但必须考虑到它是一种筛查工具。
