I have had a few people say, turn on a light when your on the computer, or your going to ruin your eyes. I have spent the last 10 years behind a computer screen never with a light on. My eyes are perfectly fine. When I went for drivers license i for 20/20 and the smallest font size was completely visible. I bet i would be able to see half that size. So my question is. Is that correct scientifically? The only light i have when im on the computer is the light that is caused by the monitor.