My anecdotal experience is that eyesight is mostly genetic. As a developer and before that avid gamer, I've stared at screens and tiny text far more than the av

My anecdotal experience is that eyesight is mostly genetic. As a developer and before that avid gamer, I've stared at screens and tiny text far more than the average person, yet my eyesight remains perfect (mid 30's). My wife, as a counter-example, works in healthcare, not a screen person at work or home, but her eyesight has always been poor. Heck, my brother is a developer too, no glasses or contacts.