Computer vision syndrome (CVS) is a complex of symptoms experienced by up to 90% of computer users. Questions remain regarding its etiology. Changes in accommodation or vergence have been suggested as causative factors. This study sought to determine if subjects with CVS had abnormal accommodative or vergence facility findings and to identify if sustained computer use produces a change in these parameters. Twenty two subjects read text from a computer screen for a continuous 25 min period. Vergence facility and both monocular and binocular accommodative facility were measured. Following the computer task, subjects completed a questionnaire regarding their level of discomfort during the task. No significant change in monocular accommodative or vergence facility was observed following the computer task, although a small increase in post-task binocular accommodative facility was noted. The highest ocular symptoms reported were tired eyes, eyestrain and dry eye. These were not correlated significantly with the accommodative or vergence facility findings.The symptoms reported appeared to be related to dry eye, and not to either accommodative or vergence abnormalities.
Vision and eye problems at computers are widespread and have become known as Computer Vision Syndrome (CVS). Symptoms include eyestrain, blurred vision, dry eyes, irritated eyes, eye fatigue, neck ache and backache. Symptoms can result from vision and eye disorders and/or from environmental disorders. Treatment often requires more critical testing of vision than is commonly performed in today's health care environment and also can require diagnosis and treatment of various aspects of the work environment such as lighting, reflections and workstation arrangement. The eye doctor does not have access to the patient's work environment nor does s/he usually have expertise in analyzing such. Two web-based services, one for computer users and one for eye doctors have been established to meet the eye care needs of computer users. Computer users can perform a self-assessment of their workstation environment and vision needs at www.DoctorErgo.com. A report of the self-analysis is given to the computer user and can be provided to the eye doctor. CVS Doctors is group of doctors with special commitment to treating CVS. The services of these doctors are made available to computer users from www.DoctorErgo.com. Eye doctors can join CVS Doctors at www.CVSDoctors.com.