Let’s face it: 3D glasses just plain suck. Never mind that I use prescription lenses and have to put the cheap movie-theater glasses over top of the ones I’m already wearing. Some people get eyestrain-related headaches when watching 3D movies, and they blame it on the glasses. The truth, however, is that the headaches aren’t necessarily caused by the glasses. As mentioned in a previous Chad’s News post, most 3D movies aren’t actually filmed with 3D cameras but are converted after the fact. If this conversion is done poorly, eyestrain will result. And even when they are filmed in 3D, the linked article discusses other issues that can cause the headaches.