Tuesday, January 27, 2009

Glasses For IT Workers

Computers are ubiquitous, at home, at work and at school.Most of us seem to spend a large part of our days squinting at a monitor and with more of our shopping and entertainment being driven by the Internet, computer use is surely going to increase.  For many of us, that’s not a problem. If you spend more than two hours a day at a PC, then it’s likely that you will experience symptoms of Computer Vision Syndrome (CVS).
CVS is the result of several factors.A decreased rate of blinking while you’re focusing on a computer screen is thought to be significant.Studies have shown that the blink rate goes down to 6–8 blinks per minute if you’re focused on a computer display (the normal blink rate is 16-20 per minute).   This leads to dry eyes and the focusing effort required for such long hours also puts strain on the ciliary muscles of the eye. The most common symptoms of CVS include headaches, focusing difficulties, aching eyes, dry eyes, double vision, blurred vision, light sensitivity, and neck and shoulder pain. 
CVS can also accelerate the early onset of a condition called presbyopia (usually associated with aging) where you experience difficulty reading fine print, particularly in low light conditions, eyestrain when reading for long periods or momentarily blurred vision when shifting between viewing distances.
he good news is that it's fairly simple to ease these symptoms. Daft as it may sound, try blinking more often!f you are not a glasses wearer, simple changes like making sure the screen is clean, correctly positioned, and set up properly will make a difference.
If you do wear glasses, then ensuring your lenses are clean and smear free will help to reduce glare and reflections. Anti-Reflective coatings on your lenses (usually available free of charge if you ask for it through suppliers like SelectSpecs.com) will eliminate surface reflections and ensure clear vision day or night.   Anti-Reflective coatings also make the lenses of your glasses appear almost non-existent, so your eyes look more natural.
Whether you wear glasses of not, you can improve your vision at work by having regular eye examinations, taking frequent breaks and resting your eyes every 20 minutes and avoiding glare or bright reflections on the screen.Swap your CRT display for an LCD screen.  Get at least a 19 inch screen with the highest resolution possible and a dot pitch of .28 mm or smaller.There's no “flicker” that you get with CRT monitors and they usually have anti-reflective screen surfaces.  

The even better news is that If you you use a computer or VDU screen on a regular basis (i.e. for at least an hour most days), then according to the Health and Safety (Display Screen Equipment) Regulations 1992, your employer is obliged  to pay for regular eye examinations. Your employer may have a scheme in place or they may refund you the cost of an examination.  If that examination reveals that you require glasses specifically for Display Screen Equipment use, your employer must also pay for budget  glasses.

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