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Sports vision training reduces CVS prevalence in males from 76.0% to 44.0% and females from 72.0% to 38.0%Sports vision training may reduce eye strain from screen use

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Key Takeaway
Consider sports vision training as a potential nonpharmacological intervention to reduce symptoms of computer vision syndrome.

This randomized controlled trial enrolled 200 undergraduate students with high daily screen exposure to evaluate the impact of a 12-week sports vision training (SVT) program on computer vision syndrome (CVS). The SVT intervention included BACKNSHOU exercises, Fitlight reaction tasks, SENAPTEC strobe-glasses training, multi-target tracking, and sport-based cognitive-motor activities. The control group received standard physical education and general 20-20-20 eye-use advice.

Primary outcomes showed a decrease in CVS-positive prevalence among males from 76.0% to 44.0% and among females from 72.0% to 38.0%. Secondary outcomes included statistically significant lower odds of reporting eye fatigue, soreness, and red eyes in the SVT group compared to the control group. Additionally, the SVT group reported lower odds of difficulty focusing, headache, and neck/shoulder/back pain.

Safety data were not reported, and no adverse events or discontinuations were documented. A primary limitation is the lack of objective ocular, oculomotor, and neurophysiological measures to clarify the underlying mechanisms of the intervention. Furthermore, the study population consisted of non-athletes. These results suggest that movement-based visual training may offer a viable adjunct to conventional CVS prevention methods for students with high screen exposure.

Staring at screens all day can lead to computer vision syndrome, a condition that causes tired eyes, headaches, and neck pain. For many students and workers, these symptoms are a constant part of daily life. A recent study looked at whether a specialized sports vision training program could offer more relief than standard advice like the 20-20-20 rule.

The researchers took 200 undergraduate students who spend a lot of time on screens and split them into two groups. One group practiced for 12 weeks with dynamic exercises, including reaction tasks and strobe glasses. The other group followed standard eye care advice. By the end of the program, both men and women in the sports vision group saw a significant drop in reported symptoms.

Specifically, those in the training group were less likely to report red eyes, difficulty focusing, or neck and shoulder pain compared to the group following standard advice. While the study did not use advanced medical equipment to measure exactly how the eye muscles changed, it suggests that movement-based vision training could be a helpful addition to your daily routine.

What this means for you:
Sports vision training may reduce common symptoms like headaches and eye fatigue caused by heavy screen use.

Common questions

What symptoms did the sports vision training help with?

The 12-week program helped reduce several common issues. Participants in the training group were less likely to report red eyes, eye fatigue or soreness, and difficulty focusing. They also reported fewer headaches and less pain in their neck, shoulders, and back compared to those who only received standard advice.

Who was included in this study?

The study included 200 undergraduate students who had a high amount of daily screen exposure. This group helped researchers see how the training worked for people who spend significant time looking at digital devices as part of their daily lives.

How did the sports vision training differ from standard care?

Standard care involved general advice, such as the 20-20-20 rule. The sports vision training was more active; it included reaction tasks, strobe glasses, and multi-target tracking to help the eyes and brain work together during movement.

Study Details

Study typeRct
EvidenceLevel 2
PublishedJul 2026
View Original Abstract ↓
BackgroundComputer vision syndrome (CVS), or digital eye strain, is common among university students exposed to prolonged screen-based near work, yet most preventive approaches rely on passive strategies such as visual breaks, ergonomic advice, or optical filtering. This randomized controlled trial examined whether a 12-week sports vision training (SVT)-enhanced physical education program could reduce CVS symptoms in college students with high daily screen exposure.MethodsTwo hundred undergraduate students were randomized to an SVT group or a control group, with 100 participants in each group and equal sex distribution. The SVT program integrated BACKNSHOU exercises, a structured sequence of eye, neck, shoulder, and back movements used for visual and postural preparation, Fitlight reaction tasks, SENAPTEC strobe-glasses training involving intermittent visual occlusion during visuomotor activities, multi-target tracking, and sport-based cognitive-motor activities. The control group continued standard physical education and received general 20-20-20 eye-use advice. CVS symptoms were assessed before and after intervention using CVS-SMART, covering visual-fatigue, ocular-surface, and neuromuscular/extraocular domains.ResultsAt baseline, 149 of 200 participants were classified as CVS-positive, corresponding to a prevalence of 74.5%, with no significant difference across sex-by-group strata. After 12 weeks, CVS-positive prevalence decreased from 76.0 to 44.0% in male SVT participants and from 72.0 to 38.0% in female SVT participants, whereas the control group showed only small, non-significant reductions. Self-reported symptom-specific analyses showed reductions in eye fatigue/soreness, difficulty focusing, red eyes, headache, and neck/shoulder/back pain in the SVT group. Generalized linear mixed models indicated lower post-intervention odds of symptom reporting across all five modeled symptoms, with group effects favoring SVT for all symptoms and reaching statistical significance for eye fatigue/soreness and red eyes.ConclusionThese findings suggest that dynamic, movement-based visual training may complement conventional CVS prevention strategies, although future studies incorporating objective ocular, oculomotor, and neurophysiological measures are needed to clarify mechanisms. This study extends sports vision training from athletic performance contexts to CVS symptom reduction in a non-athlete, screen-exposed student population.
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