i've been sitting at a computer for 40+ years. never had eye strain. although proper ergo was drilled into me at intel and microsoft, and i continue those practices. someone needs to teach the next generation of programmers about ergonomics because clearly they aren't getting it from work or school. if you're going to lock your body into a seated position for 10+ hours a day for decades, you need to do it responsibly and not just grind through if you feel pain. it only gets worse.