Ideally more software would have an option to use either a light or dark theme or customizable colors. Dark themes make eye floaters much, much more manageable, which is my main visual problem and a common complaint from heavy computer users. Can't speak for anyone else but that's my experience. It's also important to have good ambient light levels as well, which can affect things.
I have pretty bad floaters in my eyes, and redshift or Flux is essential, and so is inverting browser colors. I can't recommend highly enough an addon for Chromium called hacker vision which inverts everything perfectly. Combine with a dark GTK theme or custom Windows Classic theme (impossible or nearly impossible to do in Windows 8, afaik, shame on Microsoft) and you can eliminate most of the horrible light-bulb white screens. Even if I had perfectly clear vision I'd still use inverted colors due to the decrease in eye strain.
Eye floaters can be awful and I'd have a hell of a time using a computer without these things. Unfortunately the only real option to cure them is getting a vitrectomy in which the vitreous jelly is sucked out of your eye with a 3-port vitrector (which consists of one cutter/sucker, one saline injector, and a light for the surgeon) and having the eye replace it naturally by secreting fluid in its place. Not very fun.
I don't think they were caused by computer usage even though I'm on the computer almost all day. No real problems with visual acuity.
Empty github profiles don't say anything good or bad because of private repositories not showing up on the commit graph. I put my own junk on bitbucket anyway because there's no reason for the world to need to see it in 99.99999% of cases.
I discovered soma.fm a few weeks ago and it's been on ever since. It has a lot of good ambient stations with no lyrics and good variety. It's good for leaving on for long periods of time to concentrate. Also check out musicforprogramming.net.