2(nd) Department of Ophthalmology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
2(nd) Department of Ophthalmology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Prev Med. 2023 May;170:107493. doi: 10.1016/j.ypmed.2023.107493. Epub 2023 Mar 26.
Digital eye strain (DES) or computer vision syndrome (CVS) is a phenomenon linked to ever increasing digital screen use globally, affecting a large number of individuals. Recognizing causative and alleviating factors of DES may help establish appropriate policies. We aimed to review factors that aggravate or alleviate DES symptoms in young, i.e. pre-presbyopic (< 40 years old), digital device users. We searched PubMed, Scopus, EMBASE, Cochrane, Trip Database, and grey literature up to 1st July 2021. Among a plethora of studies with heterogeneous diagnostic criteria for DES, we only included those using a validated questionnaire for the diagnosis and evaluating associated factors in young subjects. Relevant data were extracted, risk of bias assessment of the included studies and GRADE evaluation of each outcome were performed. Ten studies were included (five interventional, five observational) involving 2365 participants. Evidence coming from studies with moderate risk of bias suggested that blue-blocking filters do not appear to prevent DES (2 studies, 130 participants), while use of screens for > 4-5 h/day (2 studies, 461 participants) and poor ergonomic parameters during screen use (1 study, 200 participants) are associated with higher DES symptoms' score. GRADE evaluation for the outcomes of blue-blocking filters and duration of screen use showed low to moderate quality of evidence. It appears advisable to optimize ergonomic parameters and restrict screen use duration, for minimizing DES symptoms. Health professionals and policy makers may consider recommending such practices for digital screen users at work or leisure. There is no evidence for use of blue-blocking filters.
数字眼疲劳（DES）或计算机视觉综合征（CVS）是一种与全球日益增加的数字屏幕使用相关的现象，影响了大量人群。认识到 DES 的致病和缓解因素可能有助于制定适当的政策。我们旨在综述加剧或缓解年轻（<40 岁）数字设备使用者 DES 症状的因素。我们检索了 PubMed、Scopus、EMBASE、Cochrane、Trip 数据库和灰色文献，检索时间截至 2021 年 7 月 1 日。在大量使用 DES 诊断标准存在异质性的研究中，我们仅纳入那些使用经过验证的问卷进行诊断并评估年轻受试者相关因素的研究。提取相关数据，对纳入研究进行偏倚风险评估，并对每个结局进行 GRADE 评价。纳入了 10 项研究（5 项干预性研究，5 项观察性研究），共涉及 2365 名参与者。来自偏倚风险中等的研究证据表明，防蓝光滤光片似乎并不能预防 DES（2 项研究，130 名参与者），而每天使用屏幕>4-5 小时（2 项研究，461 名参与者）和屏幕使用时的不良人体工程学参数（1 项研究，200 名参与者）与更高的 DES 症状评分相关。对于防蓝光滤光片和屏幕使用时间这两个结局，GRADE 评价显示证据质量为低到中等。似乎应优化人体工程学参数并限制屏幕使用时间，以尽量减少 DES 症状。卫生专业人员和政策制定者可能会考虑建议在工作或休闲时使用数字屏幕的人采取这种做法。目前尚无使用防蓝光滤光片的证据。
