Desk. Friday , February 09th , 2018 - 15:02:05 PM
The difference between using some magnification for the computer distance while in your late forties and older, versus not is demonstrated with this simplified example. Given a choice, would you rather walk two miles to work or ride a bike the two miles? You’ll get there either way, but you will spend a lot less energy using the bicycle. This is the reasoning and science behind using a dedicated pair of computer glasses or using a computer clipon lens.
Working at a desk top computer over fifty years of age with your general purpose prescription eyeglasses can be challenging on your eyes. The eye’s focusing ability is under a strain to keep the content on the screen clear. Just because you can see the computer screen clearly through the distant portion of your glasses doesn’t mean you are not taxing the eye’s focusing ability to maintain a sharp focus. Also, lifting your chin up to see through the mid portion of your progressive style lenses will have consequences on your neck and back due to poor ergonomics. The reason you are using a bifocal is to see at close reading distance clearly for extended periods of time.
The first step is to be aware of how you sit at your desk for long periods of time. Most people will slouch down into the chair, or they will lean forward onto the desk and hunch their shoulders. This posture can stretch out your spinal ligaments and strain the spine. To alleviate this problem, you should make sure you have adequate lumbar support from your chair, and align your lower back directly against the chair back. If you are unable to do this comfortably, invest in a lumbar support cushion so your lower back can rest directly onto the cushion. This will help insure that you sit up comfortably and don’t slouch.
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