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Do Computer Screens Damage Your Eyesight?

By Ken Black
Updated May 16, 2024
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Since the popularity of computers began the meteoric rise, there have been questions associated with computer screens and eye strain. Some say the evidence is clear that they can damage a person's eyesight. After all, if they cause eye strain and discomfort, that is the body's way of saying something. However, the extent to which computer screens damage eyesight is somewhat unclear.

There is a great deal that is known. First, eye strain from prolonged computer use is a fact, though some people are more susceptible to it than others. Second, it can usually be prevented or relieved in a few easy steps. Third, technology, which is partially responsible for the problem, can also offer a partial solution.

There are plenty of symptoms that often show up as a result of eye strain from computer screens. It may first start with a little soreness. Then, it may progress to dry eyes, blurred vision and even headaches. Taking a ten to 15 minute break every hour is a good way to help avoid this and rest your eyes, though some employers may not be as generous with their break periods. If possible, break up computer tasks and non-computer tasks throughout the day as much as possible.

One of the major improvements in computer screens has also helped. LCD screens tend to cause a lot less eye strain than the traditional CRT computer screens. Still, even an LCD screen, if it is not properly calibrated or if it is too bright, can be just as hard on the eyes. This is very important as many people tend to keep their LCD screens too bright, simply because they are not viewing them from a proper angle and may be trying to compensate for the "screen door" effect.

Fortunately, most of the eye damage, if it is to be called that, resulting from the use of computer screens tends to be a short-term situation. Once the eyes are rested, the symptoms tend to quickly go away. However, if the eyes are not sufficiently rested, the symptoms may return quicker than they appeared at first once computer activity resumes.

While these short-term effects are well documented, the main question on people's minds is if computer screens are able to cause permanent damage over time. The data is not sufficient on this question one way or the other. While many who work in office environments and have worked with computers all their lives have developed eye problems, many others have not. Perhaps in the future, the research will be completed that can fully answer this question.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

By anon308911 — On Dec 13, 2012

Recently i tried to install a free software tool called "ClassleSoft EyePro 2.0" to get rid of my computer related eye strains. So far it has been quite useful.

By anon267193 — On May 09, 2012

My brain is starting to process things slower than ever. Even though I can touch type because I am addicted to online chatting, I am not turning in homework on time because I am addicted to games. I also zone everything out.

By anon193962 — On Jul 06, 2011

I noticed my eyes getting blurry after long computer use. I lowered the brightness of the screen, try to blink a lot, and take more vitamins that protect the eye from macular degeneration and cataracts. There is SO much evidence that exposure to bright lights uses up our bodies store of certain substances we produce from vitamin A and Lutein, Xeaxathin, etc. So I take them as a supplement to make sure I don't lose my precious eyesight.

By anon125355 — On Nov 09, 2010

people, comment #4 is so fake. Everyone knows squinting is bad for you and professional eye doctors restrain from squinting. Also, they advise to always work in a well lit room. Don't listen to that so called "15 year old kid." It's probably some guy trying to get you to lose more eye sight.

By anon111349 — On Sep 16, 2010

I'm a 15 year old kid and here's how to prevent it:

Sit in a dark room where your eyes can focus easily with no obstructions, and no glare. (people say dark rooms are bad but no, they are not. just don't make it pitch black.)

Put your screen brightness up higher depending how far you are away from your screen so you almost squint. now squinting is a proven nutrition to prevent dry eyes and retina problems.

You will squint every now and again which isn't bad and it will prevent it.

You don't have to be in a dark room. just make the screen bright.

By anon81182 — On Apr 30, 2010

I'm doing this for my science case study. it helps.

By anon72487 — On Mar 23, 2010

i'm doing a science fair project. based on this.

By anon37612 — On Jul 20, 2009

i have played and worked on a computer any where from 1-5 hours non stop which makes my eyes tired and they get dry after a long time. At first i didn't know about this and now i have blurry vision. I used too have the old CRT screen. they were a pain and now i have a LCD which is a lot better but still after a long time it hurts my eyes im tryin out eye exercises but i don't think there going to work. the best thing to do to prevent eyesight loss is watch a little T.V. and stay on the Computer for a little time. take breaks if you have to work for a long period of time.

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