[lemmon7]

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.

[Nadya]

Strange, I find the exact opposite. I have to use Stylish to redesign any website that uses a dark theme precisely because of eye strain caused by reading high contrast backgrounds. White on black emphasizes this more than white on black when reading lines of text. [0]

[0] http://www.ironicsans.com/owmyeyes/

[lemmon7]

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.