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Counter anecdata. I'm 39, right eye slightly myopic since I was a kid. Never needed glasses. Always prefered using the computer in the dark since when I was a teen and had an NEC MultiSync CRT monitor. My eyes are still OK as far as I can tell.
-- frequently check if your reading (etc.) is comfortable. If it is not, adjust your position, fix your environment etc.
(As opposed to those who strain themselves intensively or prolongedly out of inattention. You check your posture, your inner states, your state in general: you also keep a watchdog that your eye comfort is given.)
Edit: like for the rest, memory of the triggers for awareness of the indirect causes. Some factors have effects only after time, and they are of course more dangerous. Local attention is the base ("comfortable now" is the first requirement); practices that strain you with effect hours later can still be identified; the less evident factors could be a concern but they will probably gain relevance only if the former basics (avoiding causes for immediate and recent impact) are observed.
Also, zooming the websites (can't comfortably read HN below 150%).
Women say they love mens eyes. So you have to work those out at the gym as well. I do eyelid lifts and eye rolls. 3 sets of 20 6 days a week with a rest day on Sunday. You can do these while on the treadmill and doing other excercise to increase efficiency. You can also mix in some beta carotene into your protein shake to really maximize the eye pump.
I try the 20/20/20 thing - every 20 mins, spends 20 seconds looking at something 20ft+ away. I wear sun glasses outside when it is even moderate bright. I take lutein, "the eye vitamin." I keep pretty far from my monitor and its elevation keeps my head in a neutral position. I also have semi-regular exams at a retina specialist to monitor some thinning.
I have a blue light filter, it's advised when spending a lot of time at a screen. I used to have headaches sometimes, but that disappeared with it.
https://en.wikipedia.org/wiki/Redshift_(software) Also, zooming the websites (can't comfortably read HN below 150%).
-- use of the [Ctrl]+[Wheel] or equivalent on the relevant software;
-- a keyboard shortcut for inverted colours (e.g. `xcalib -a -i`);
-- different instruments for different environments (e.g.: Sunlight? Maybe prefer EPD. No light? Maybe prefer OLED light on black. Etc.)
should be base strategy - extended adjusting of your comfort through the, well, "hacking" we normally practice.
Women say they love mens eyes. So you have to work those out at the gym as well. I do eyelid lifts and eye rolls. 3 sets of 20 6 days a week with a rest day on Sunday. You can do these while on the treadmill and doing other excercise to increase efficiency. You can also mix in some beta carotene into your protein shake to really maximize the eye pump.