I have had 3 sons on Ritalin and the last switched to Concerta. My eldest developed the blinking if the eyes. As the dosage was adjusted to best fit him, this tic backed off. He has been off of the medication for a few years (he is an addult) and there is no sign of the eye blinking. The second child never did develope any tics. He was OCD before that and that did not alter either...the OCD is associated with Aspergers. My youngest developed the eye blinking tic with the Concerta. He was off the Concerta for the summer and the tic went away. He is now back on it (at his request...36 mg per day) and the tic reappeared. I would have to say yes to the connection, but no to the tic being permanent. It may be with some, but not all.