Desk. Wednesday , January 17th , 2018 - 18:38:24 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.
When purchasing an ergonomic office desk, there are certain features that are important. Make sure you find a desk that has an adjustable keyboard shelf which can be changed to suit the height needs for multiple users. The leading edge of the work surface on the desk needs to be between 24 to 27 inches high in order to allow for the arms of your chair. If this space is less than 24 inches, it will interfere with the armrests and could restrict movement.
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