Computer reading glasses can help anyone who has trouble reading text on their computer for long periods of time, even if they already wear everyday glasses. Computer screens can put uncomfortable and unhealthy strain on the eyes because of the amount of light computer screens produce, and because of the distance that most people sit away from their computers to read, browse, or work.
Think of the amount of damage a computer monitor can do to your eyes as sitting close to a television with a lot of white on the screen. It is essentially the same effect, but not many people have sat so close to a television, much less one with swarms of white on the screen, for as long as your average computer user is looking at their screen. It is almost like watching TV in the dark for extended periods of time.
You can reduce the brightness on your monitor to reduce the urgency in your need for computer reading glasses, but the point still stands that you will probably need them if you are on the computer for at least four hours a day. If you have experienced highly or slightly blurry vision after being on the computer for an extended period of time, it might be about time for you to invest in a pair of glasses just to wear while you are looking at the monitor.
If you already wear glasses and experience headaches or eye pain after staring at your computer monitor for a few hours, you should look into a pair of computer reading glasses as well. Standard prescription glasses are not meant to help you see well at the distance you normally sit from your screen, so while you may see fine until the pain or blurriness comes around, you are putting undue strain on your eyes. This strain can cause your eyesight to gradually get worse with time, especially if you experience it daily.
Standard reading glasses are also not meant to protect from the effects that long-term computer screen staring can have on you. They are meant to read text at close range, but they are not meant to handle the extreme amount of brightness. A separate pair of glasses for computer use is recommended.
It's best not to take a risk with your eyesight, and if you are on the computer for hours a day you are taking a huge risk. A life of being able to see clearly is worth a little inconvenience. If you have not experienced the headaches or the blurred vision yet, you are one of the lucky ones. Most do experience it and can do nothing about it. Invest in a pair of computer reading glasses. You will be glad you did.