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Is it time for computer glasses?

Are there specific glasses for computer use that improve vision and/or promote eye health? There seems to be little objective information on the subject. A google search turns up lots of articles from companies trying to sell computer reading glasses, but not much else. Two issues do seem relevant. First, the distance from the computer screen to your eyes and second the use of a single magnification specifically for that distance. Second, the effect of "blue light" on the eyes and how to effectively reduce it.

The distance at which most people view a computer screen is usually further away than the distance at which they use their reading glasses for reading printed documents, papers, books and phones. Since a stronger strength is better closer and weaker strength is better further away it's only logical that a slightly weaker strength will be better at a slightly increased distance. Also, multifocal lenses can become distracting as we constantly have to tilt our heads up and down to find the "sweet spot" for the specific distance of our computer screen. Therefore, it makes sense for those who view a computer screen for prolonged periods to have a dedicated pair of "computer glasses" that have a single strength that is comfortable at the screen distance and does not require constant refocusing.

The amount of definitive research on the effects of reducing blue light, and how to effectively reduce blue light, is also minimal. There are companies that sell glasses with a yellow tint that supposedly reduces the blue light from a computer screen. There are also companies, that make apps for computers and smart phones that reduce the amount of blue light coming from the screen. Some of these apps can be set to reduce the blue light all the time, or adapt to the time of day. Reducing it more at night. I tried the most popular one of these apps, "f.lux" for about six months. I set it to reduce the blue light based on sunset, reducing it more at night. The screen is noticeably more yellow, but over time I notice that less. There is a "pause" function so that I can temporarily shut it off when I do need to see true color. My anecdotal findings are that it does seem to be much more comfortable and I don't need a special pair of glasses just for the computer. Of course, anecdotal findings are not scientific research. It may be that I just think it's working because I expect it to, so it appears jury is still out on the actual effects that everyone can expect.

You can find f.lux here: https://justgetflux.com/ ‚Äč

Here's an article on"f.lux, blue light, and sleep: Reduce Eye Strain And Get Better Sleep By Using f.lux On Your Computer

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