This post was most recently updated on June 3rd, 2019
Computer Vision Syndrome
A term coined to describe a series of symptoms associated with computer use, including eye discomfort, pain, dryness and irritation. This syndrome has two primary components, including a dry eye component and a focusing component. Computer vision syndrome is very common in the population and despite the name it is not proprietary to computer use. Similar symptoms are seen when people undergo extensive periods of reading, studying, and sometimes even television watching.
Dry Eye and Computer Vision Syndrome
- Many eye care practitioners believe that dryness is caused by a decreased blink rate during computer use. Why is blinking important? Blinking serves to “resurface” the tear layer on the front surface of the eye. The newly applied tear layer protects the front part of the eye as well as creating a smooth optical surface so light can be transmitted clearly. If we blink less the tear film breaks down and dehydrates the front of the eye, causing dryness and blurred vision.
Managing the Dry Eye
- One of the easiest ways to decrease the symptoms of ocular discomfort is to employ the 20-20-20 Rule. This rule suggests looking at an object at least 20 feet away for 20 seconds, for every 20 minutes of computer use. This method is extremely simple and has been proven to help improve symptoms of Computer Vision Syndrome.
- Another way is to use artificial tears during periods of extensive computer work. The tears can help prevent the eyes from drying out while improving your quality of vision during computer use. Consult your Eye Care practitioner to determine which type of artificial tear would work best for you.
The Focusing Component of Computer Vision Syndrome
- The focusing component can be seen with people who wear bifocals, and is caused by the necessity to tilt one’s head to view the computer screen through the near part of the bifocal. As you can imagine tilting your head throughout the day will lead to neck and back discomfort.
- 20 to 40 year old students or professionals are another group whose focusing system is affected by excessive computer or reading.
Managing the Focusing Component
- Invest in a pair of computer specific bifocals. By utilizing current lens technology we are able to design progressive lenses specifically for work, with a goal of improving functionality and decreasing head or neck strain during the day.
- If you are in the second demographic detailed above, consider a computer specific pair of glasses to help relax the focusing system within your eye. These are made with a small amount of add power and anti-reflective coating to relax your eyes from excessive screen time.