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The assessment of a prescribing protocol for pre-presbyopic computer users to relieve symptoms due to Computer Vision Syndrome (CVS): A pilot study

1 May 2004


The purpose of this study is to investigate the effectiveness of a prescribing method for pre-presbyopic computer users to relieve symptoms of Computer Vision Syndrome (CVS). As of now, no standard protocol exists to prescribe computer lenses for this population. Subjects were between 20-34 years of age, spent a minimum of 6 hours a day for 5 days a week working on a computer, and had visual symptoms of CVS. An initial exam was performed and subjects were randomly placed into one of three groups: habitual distance prescription, distance subjective prescription, or computer prescription. Symptom surveys were used to determine the severity of symptoms for the two month duration of the study. A follow-up examination was performed to determine if exam findings correlated with symptoms, and basic case analysis was used to analyze the exam data. Overall, the group receiving the computer prescription reported less frequent symptoms and normalized accommodative and vergence posture findings. A future study should involve a greater number of participants to show whether this conclusion can be made.


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