Eye strain solutions

[Note: the following should not be construed as medical advice as I am not a doctor.  I only provide an example of something that worked for me.]

Reading from an LED screen a great deal lately, I ran into some problems with eye strain a while back.  Symptoms included:

• Inability to focus on what I was reading
• Constantly trying to refocus
• Feeling dizzy and sometimes gross
  

Fortunately rather than blowing a wad of cash with some eye doctor to tell me the same thing, a good friend had the same issue and correctly (it seems) diagnosed it as eye strain.

Here are the fruits of my research:

• EyeLeo freeware - really helps by just interrupting your work every so often to encourage you to take breaks, do some eye exercises.  They're annoying but they definitely work.
• F.lux (freeware) - lowers the blue color that your brain associates with morning.  Over the course of a day, it gradually lowers the color temperature so that you can sleep better at night.  This also reduces eye strain.  Needs to be disabled for any kind of color-sensitive work.  Alternately, you can buy some clip-ons that do basically the same thing:
  
• I bought some goofy big eye strain-prevention clip-ons.  They work well so far and help out with night driving as well (I often get blinded by headlights).  I say goofy as they're not very small, but they are dramatically cheaper than other versions I found (most were upwards of $50).