I have mild myopia/astigmatism and also use a different prescription for computer use than for distance. Using my distance glasses at monitor distance gives me

I have mild myopia/astigmatism and also use a different prescription for computer use than for distance. Using my distance glasses at monitor distance gives me an eye-strain headache, but without glasses I get a headache from squinting and back pain from leaning in to keep my nose 8 inches from the screen. 10 years ago it took some persuading to get an optometrist or ophthalmologist to prescribe something like that, but nowadays it seems to be routine. Even if you are able to get by in daily non-computing life without glasses, that doesn't mean they couldn't reduce eye strain. Focusing a couple feet away means engaging your eye muscles pretty strenuously unless you have moderate myopia. And a lot of people have astigmatism without even knowing it.