I was taking Lamictal for BP disorder for about 4 months. By the time I got to 200mg my vision went bad. Could not focus on anything. My vision has always been perfect so I this was upsetting. I tried backing down to find a dosage that did not impact my vision but could not find one. After 4 months off Lamictal, my vision is still bad, trouble focusing, blurred vision. I am convinced that Lamictal has permanently ruined my vision.