Chhetri Santosh, Poudel Rupesh, Adhikari Srijana, Belbase Umesh, Cantó-Cerdán Mario, Poudel Manish, Thapa Suraj
Department of Optometry, Tilganga Institute of Ophthalmology, Kathmandu, Nepal.
Department of Pediatric ophthalmology, Tilganga Institute of ophthalmology, Kathmandu, Nepal.
J Optom. 2025 Aug 8;18(4):100575. doi: 10.1016/j.optom.2025.100575.
To identify the prevalence of non-strabismic binocular vision anomalies in a systematically randomized sample of symptomatic, non-presbyopic subjects from a tertiary hospital, using a broader range of diagnostics signs.
The study was designed as hospital-based, cross-sectional, and analytical and was conducted from March 2022 to April 2023. Systematic random sampling was employed to select the subjects. Symptomatic subjects aged between 18 and 35 years with best-corrected visual acuity of 6/6 in each eye and no change in refractive error during the subjective refraction were included in the study.
Out of the 231 subjects examined, 91 (39.39 %) were found to have non strabismic binocular vision anomalies. Of all the non strabismic binocular vision anomalies, 60 subjects (26 %) had binocular dysfunctions, 22 (9.5 %) had accommodative dysfunctions, and 9 (3.9 %) had both accommodative and binocular dysfunctions. The most common dysfunction was convergence insufficiency (18.2 %), followed by accommodative infacility (6.06 %) and fusional vergence dysfunction (3.9 %). The most prevalent symptom was headache (16.7 %), followed by visual fatigue (14.1 %).
Two-fifths of the symptomatic subjects have non strabismic binocular vision anomalies. It is essential to assess all accommodative and binocular parameters in order to arrive at a diagnosis of non strabismic binocular vision anomalies.
使用更广泛的诊断体征，确定一家三级医院中有症状、非老花眼受试者的系统随机样本中非斜视性双眼视觉异常的患病率。
本研究设计为基于医院的横断面分析研究，于2022年3月至2023年4月进行。采用系统随机抽样法选取受试者。纳入研究的受试者年龄在18至35岁之间，每只眼睛的最佳矫正视力为6/6，主观验光期间屈光不正无变化。
在检查的231名受试者中，91名（39.39%）被发现有非斜视性双眼视觉异常。在所有非斜视性双眼视觉异常中，60名受试者（26%）有双眼功能障碍，22名（9.5%）有调节功能障碍，9名（3.9%）既有调节功能障碍又有双眼功能障碍。最常见的功能障碍是集合不足（18.2%），其次是调节不灵活（6.06%）和融合性聚散功能障碍（3.9%）。最常见的症状是头痛（16.7%），其次是视觉疲劳（14.1%）。
五分之二有症状的受试者有非斜视性双眼视觉异常。为了诊断非斜视性双眼视觉异常，评估所有调节和双眼参数至关重要。
