Gunnar Optiks have gotten positive reviews.
An optometrist explains to Ars Technica why these are not just hype or placebo effect:
The tints are pretty standard in the
optical community. The advantages
stated are all true... they haven't
reinvented the wheel, so to speak,"
she explains. The amber tint is going
to increase contrast when looking at
computer or television screens, and
the anti-reflective coating will also
help. Anderson says that should help
you "get back 8-10 percent of the 12
percent of usable light that we lose
to glare, when worn in front of a
light-emitting source such as a
computer or oncoming headlights.
Some testimonials from a thread on Hacker News:
I have a pair of Gunnar Optiks
(http://www.gunnars.com/) that I LOVE.
I used to have ridiculous eye strain
when staring at the computer screen
for hours, but after getting a pair
it's all but gone away... after using
them for close to a year, I can
honestly say they have made a great
impact on my ability to do work. I'd
highly recommend that anyone who
hasn't and has issues with eye strain
give them a try.
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.