hello im posting for my son and husband. my son was recently diagnosed with tn at the emergency room. my son lost his vision temporarily at work for 30 minutes, and all he could see was a bright white light. my son had severe pain in his eye. i spoke to the ER DR about the tn symptoms. The dr stated that tn can cause like a tic that can jerk the head backwards too. i also asked the dr about other symptoms my husband is experiencing...rapid blinking eyelids and bouncing eyes...my husband is blind when this occurs along with severe chronic head pain. the dr stated that all of these symptoms my husband is experiencing can occur as well with tn. the dr also stated that tn runs in familys. has anyone else ever experienced loss of vision with tn? thanks in advance for replies....take care