The following links came to my attention:
- http://forum.unity3d.com/threads/63874-stereo-3D-in-Unity-3D?highlight=anaglyph
- http://forum.unity3d.com/threads/61759-3D-Anaglyph-System-for-Unity-iPhone-Basic-Pro-and-Unity-Free?highlight=anaglyph
Looking for anaglyph glasses?
- http://www.amazon.de/Professionelle-3D-Brille-Anaglyphenbrille-Pilot/dp/B003HC6IRW/ref=sr_1_2?ie=UTF8&qid=1288533575&sr=8-2
- http://www.amazon.de/Professionelle-3D-Brille-Anaglyphenbrille-Captain/dp/B003ESNHDM/ref=sr_1_7?ie=UTF8&qid=1288533575&sr=8-7
While the "Pilot Style" seems to be a popular style (link #1), the "Captain Style" glasses (link #2) are more suitable to wear on top of normal glasses. I went for #2 as my patients wear glasses quite often.
I am not sure whether those glasses are the same models on amazon.com. See for yourself: Pilot Style Captain Style
-Sebas