Computer Vision Syndrome
Computer vision syndrome (CVS) is a temporary eye vision problem resulting from focusing the eyes on a computer display for prolonged, uninterrupted periods of time.
Different problems encountered after prolonged use of computers. You can have some of these problems:
- Red eyes
- Contact lens discomfort
- Neck ache and backache
- Glare sensitivity
- Blurred vision
- Slowness in changing the focus of your eyes
- Dry & Irritated eyes
- Excessive tearing
- Sensitivity to light
- Changes in color perception
- Double Vision
Reasons for CVS
When using the computer your blink rate decreases by a drastic 70 percent. Generally speaking means that instead of blinking an average of 14 times per minute, you are now blinking 7 times per minute.
Prevention is better than cure for CVS
- If your eyes are dry or irritated, use eye drops to moisturize and lubricate
- Place reference to typing materials close to the computer screens.
- Blink frequently
- Visual breaks: A good rule of thumb is 20/20, 20 minutes, look 20 feet away for 20 seconds.
- Avoid shifting at a location with direct blower or an A.C or for a long period in a room with low humidity
- Install a glare guard, an optically coated glass anti-glare filter.
- Install a screen or partition behind your computer to reduce overhead glare.
- Use a non-reflective paint or coverings on the walls.
- Make sure there is sufficient light to read hard copy without straining.
- Use a stand for hard copy so that source documents and the computer screen are at roughly equal distance from the eyes.
- If any symptoms are worse of you sight is deteriorating, make an appointment to see your eye care professional
- Adjust the height of your desk or chair so the middle of the computer screen is about 20 degrees below eye level. The screen itself should be 16- 30 inches from your eyes.
- Choose screens that can tilt and rotate. A keyboard that you can adjust is also helpful.
- Electrostatic charge on the computer which attracts & accumulates dust particles which can cause skin rash or irritation in sensitive individuals, clean computer screen regularly
- Adjustable chair.