Miljenka Bašić. Desk. February 02nd , 2018.
Your bifocal add power allows your eyes to focus on reading with less accommodative (eye muscle and lens focusing ability) effort and greater comfort for long periods of time more efficiently. A dedicated pair of computer glasses or a computer clip-on will do the same thing for desk top viewing. Otherwise, looking at a PC monitor through the distant portion of your bifocal or progressive lenses is like walking versus riding the bicycle to work example; you my be able to do it but you eyes will get tired sooner. It has always been my belief that when your eyes get tired, so does your body. You now have a choice to beat sleepiness while working at the computer, and re-energize your eyes with better vision and with less physical stress on your posture.
Desk top computer use is usually more demanding beginning in the late forties or early fifties. Viewing through the distance portion of your eyeglasses to see just beyond the reading range to the computer screen puts a strain on your eyes by overworking the eye’s accommodative/focusing ability. The amount of lens power necessary to relieve the eyes from the stress is about half the amount of power necessary for you to read with.
While having an appropriate chair is important when sitting at a computer desk, properly configuring the chair that you have will go a long way toward increased comfort and ease. Sitting at the computer desk for long periods can increase muscle stress and put pressure on the spinal disks. The way you sit at your computer desk chair can make a big difference in combating this stress and strain to the body.
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