Reusable Red Cyan Glasses for Classroom and Museum Programs

https://opticalwonder.terracolumn.com/posts/common-problems-when-using-red-cyan-glasses-and-how-to-avoid-them

Reusable Red Cyan Glasses for Classroom and Museum Programs is easier to understand when the viewing goal is clear. Red cyan glasses are only one part of the full experience. The setting, fit, storage, and user steps also matter