To assess computer vision syndrome (CVS) in a preteen population through an adult-validated CVS questionnaire and to evaluate how digital devices affect accommodative and binocular vision, we enrolled 309 preteens in this cross-sectional study. An adult-validated CVS questionnaire adapted to preteens was used for all subjects. Visual acuity testing, unilateral and alternate cover tests, and tests for accommodative and vergence responses were performed for all preteens. The mean age was 10.75 ± 0.67 (10-12) years. Subjects were divided into two groups: the mild CVS group with a mean CVS score ≤2 and the severe CVS group with a mean CVS score >2. Between the mild and severe CVS groups, statistically significant differences were found in near point of convergence break and recovery (P = 0.03 and P = 0.02, respectively) and distance negative fusional vergence break and recovery (P = 0.02 and P < 0.01, respectively). More children with severe CVS developed vergence disorders than those with mild CVS. Optometric clinical screening assessments could reduce ocular symptomatology and prevent long-term effects. However, poor optometric findings might have occurred first, and the poor convergence skills resulted in the symptoms reported while using devices.

中文翻译：

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患有计算机视觉综合征的青春期前儿童的调节和双眼障碍：一项横断面研究

为了通过成人验证的 CVS 问卷评估青春期前人群的计算机视觉综合征 (CVS)，并评估数字设备如何影响调节和双眼视觉，我们在这项横断面研究中招募了 309 名青春期前儿童。所有受试者都使用了适用于青春期前的成人验证 CVS 问卷。对所有青春期前儿童进行了视力测试、单侧和交替覆盖测试以及调节和聚散反应测试。平均年龄为 10.75 ± 0.67 (10-12) 岁。受试者分为两组：平均CVS评分≤2的轻度CVS组和平均CVS评分>2的重度CVS组。轻度和重度 CVS 组之间，收敛断裂和恢复近点差异有统计学意义（P = 0.03 和 P = 0.02，分别）和距离负融合聚散度中断和恢复（分别为 P = 0.02 和 P < 0.01）。与轻度 CVS 的儿童相比，患有严重 CVS 的儿童发生聚散性障碍的人数更多。验光临床筛查评估可以减少眼部症状并防止长期影响。然而，差的验光结果可能首先出现，差的收敛技能导致在使用设备时报告的症状。