Agree on Gunnars - ever since I started using them (about 2 months ago) my eyes are not nearly as much tired at the end of the day as they used to be. Also, no more headaches.
I was also very skeptical about them, however something had to be done about all the pain I had after using computer for 8-10 hours.
From the photo in that article, they appear to me to be similar to the effect I induce using a bookmarklet to blacken text and give the background a beige or light tan tint, when browsing. I've also taken to setting a similar background in e.g. my text editor.
I find a lot of pure white background difficult to take on a screen that is not entirely reflective and passively lit. Other colors cause more or less difficulty, depending upon hue and intensity. The stroke width of the font I'm viewing also makes a difference; the coloration I describe generally makes thin strokes easier to take.
I was also very skeptical about them, however something had to be done about all the pain I had after using computer for 8-10 hours.
Based on a couple of reviews (including one from Ars Technica http://arstechnica.com/gaming/reviews/2009/10/leveling-up-yo...) I took the plunge and bought them from a local optometrist. The plan was to return them if they did not work.
The results were evident within first several days and I kept the glasses. See for yourself - buy and return them if they don't work for you...