Good Housekeeping decided to test 3D glasses in several cinemas in order to see if they are really as gross and germ-ridden as we think. Results point to a cringe inducing yes.
The sample size for the test was rather small, but the results were completely disgusting:
The Good Housekeeping Research Institute tested seven pairs of movie theatre 3D glasses, both wrapped in plastic and unwrapped, and found a number of germs, including those causing conjunctivitis, skin infections, food poisoning, sepsis and pneumonia.
One was even contaminated with Staphylococcus aureus, the most common cause of staph infections.
Researchers do note that similar distributions of germs would probably be found on theatre seats or door knobs and probably shouldn't pose a high risk.