HI, I Have An 11 Year Old Son And His

HI, I have an 11 year old son and his right eye is twitching/blinking continuously. This happened a couple months ago and it seemed to be getting better but now it has slowly become worse. When his right eye twitches he will roll his eyes in an upward motion, almost like someone who is having a seizure. His eyes stay in this position for only a second and then he will twitch them again. He has complained about his vision being blurry also. He was on Strattera, Lamictil, and Elavil several months back and the doctor took him off of all of the medications thinking his problem was due to a side effect. Can you please help me in the direction I may need to go