Tuesday, January 10, 2012

Computer Vision Syndrome

There are millions of software professional and students using computers in India.
We recommend few eye care tips for them to avoid Computer Vision Syndrome.
Common Symptoms
 Eye strain
 Blurred vision
 Slow in focusing
 Double vision
 Itchy eyes
 Red eyes
 Watery eyes

Blurred letters on the screen.
Reflection of ceiling light, or glare from windows.
Eye muscle strain caused by looking at a near screen for too long.
Symptoms such as eye strain, blurred vision, slow in focusing, double vision, headaches appear when the ciliary eye muscles are tired and cannot focus  properly.
Heat generated and dispersed from the back of the computer monitor accelerates tear evaporation.
Air-conditioning in computer room dries up the air and accelerate tear evaporation.
Over concentration on near screen reduces blinking frequency, which leads to inadequate tear replacement and makes the eyes itchy and red.
On the other hand, dryness and itchiness of eyes can stimulate excessive tear production, causing  watery eyes
How to Take Care
Normally lit room
Use lampshade to divert ceiling light downwards to avoid glare.
To avoid reflection and glare from the screen, do not place the screen by the window and do not sit with your back facing the window. Consider using curtains to prevent too much light coming in from outside
To avoid reflection and glare from the table, use table and countertops with non-reflective matt surfaces
Choose dark letters and light background on the screen to enhance contrast, and use a filter to reduce the brightness
Regularly wipe the screen with tissue paper or dry cloth to remove dust that affect the clarity.
Place the screen slightly below eye level so that the eyes are looking slightly downwards
Document and the screen should be at the same distance, around 40-60 centimeters, to the eyes. This saves the eyes from frequent accommodation
Use accessory light for the document if needed
Take 5-10 minutes rest after using the computer for 30-40 minutes
Avoid placing the back of the monitor too close to wall, otherwise the heat will be reflected towards your eyes.
Avoid air-conditioning or setting the temperature too low, as long as the computer is not damaged
Intentionally increase the frequency of blinking so that tears can be swept over the eyes for lubrication and moisture
Use artificial tear to lubricate the eyes if needed.

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