Film reader Mike S alerted me to a nice article over at ShadowLocked which features tips on how to avoid getting a headache during digital 3D movies. And by digital 3D movies, I mean Real D, Dolby 3D or IMAX 3D. You know, the ones with the polarized black lens glasses. It is nearly impossible not to get eye strain from the old stereoscopic red/blue (or other color variation) glasses.