Computer Vision Syndrome

Computer vision syndrome (CVS), also called digital eye strain, is the cluster of eye and vision symptoms that builds up during prolonged use of digital devices — computers, smartphones, tablets and e-readers. It is defined by the symptoms rather than by any single finding, and those symptoms typically grow through a long stretch of screen work and ease once the visual demand stops.

For many people the symptoms trace back to focusing and eye-teaming inefficiencies that only surface under sustained near demand. Shorter tasks hide them; a full workday or school day on a screen does not. Two people with the same 20/20 acuity can have very different tolerance for screen work, which is why focusing (accommodative) problems and intermittent double vision turn up so often in the same history.

Treatment

Solutions to screen-related vision problems are varied, but symptoms can usually be eased by a combination of regular eye care and changes in how the screen is viewed — posture, screen position and working distance, and regular breaks from the near demand.

In some cases, people who do not otherwise need eyeglasses benefit from a prescription written specifically for computer use. People who already wear glasses may find their current prescription does not give them comfortable vision at the computer distance.

• Computer-specific lenses. Eyeglasses or contact lenses prescribed for general use may not be adequate for computer work. Lenses prescribed to meet the unique visual demands of computer viewing — special lens designs, lens powers, or lens tints or coatings — can help maximize visual ability and comfort.
• Vision therapy. Some computer users have eye-focusing or eye-coordination problems that cannot be adequately corrected with eyeglasses or contact lenses. Vision therapy, also called visual training, is a structured program of prescribed visual activities that trains the eyes and brain to work together more effectively — remediating deficiencies in eye movement, eye focusing and eye teaming, and reinforcing the eye-brain connection.

Not sure whether screens are the whole story? Our symptom checklist is a good first pass, and the article Computer Vision Syndrome: Causes, Symptoms, Relief goes further into prevention. Parents can also read Screen Time and Kids and our take on blue-light glasses.

Care starts with a comprehensive developmental and binocular vision evaluation that pinpoints exactly what's happening. From there, Dr. Murray builds an individualized plan — which may include lenses or prism, in-office vision therapy, and coordination with your other providers — at our Boynton Beach and Boca Raton offices.