One set of of anecdata from the suny end of the spectrum: I have been staring at computer screens since 1982. For the first several years those screens were mai

One set of of anecdata from the suny end of the spectrum: I have been staring at computer screens since 1982. For the first several years those screens were mainly crappy small televisions attached to Orics and C64s. I was lucky to have really good eyesight in '82, and I am lucky to have it still, although these days, nearing sixty, I do need glasses for reading screens and paper. I can still manage without, but that ends in headache within just a few minutes. I buy those cheap standard supermarket glasses, currently at strength +2. They get me nicely through 8 to 10 hours af screen in a day. Whenever I go off the deep end, and spend more hours than that for several days running, I do tend to get reddish, itchy eyes. As others in the thread have reported, the arrival of flat screens was a blessing. CRTs would generally tire me out quite a bit sooner. But I don't seem to have suffered long term adverse effect from them.