Wellbutrin and peripheral vision

I took Wellbutrin 300 mg for two years before to quit smoking and for mild depression. After the initial (weeks 2-4) side effects of nausea, dizziness and headaches - I felt great. Not drugged and not overly emotional. I had been crying all the time and felt hopeless. I felt much better (and didn't want to smoke at all). I quit it for about 2 years and now I am back on Wellbutrin for the last 7 months. I started with Cymbalta - but hated the loss of sex drive (not able to orgasm - so who wants to have sex, right?) and felt drugged. So Wellbutrin was a welcome "old friend" I didn't have bad side effects with switching and have been pretty happy. EXCEPT for the one very scary side effect that I have experienced just a handful of times - but I really am curious if anyone else has had this HEAD TRIP WHILE DRIVING: It has happened when I'm on the interstate and/or bridge when I am driving at fast speeds, and my head feels whoozie all of the sudden and my brain seems to shift sideways - like on a roller-coaster, up and down, sideways - and I am amazed that my hands don't go with it and drive me into the wall! It takes intense concentration and wheel gripping to get myself where I can pull off the road. What the?? I don't want to ever experience this again - but it is so OCCASIONAL. The only variable I can think of is that I have not been faithfully taking the WB at the same time everyday (I'm more and more forgetful) and have skipped a day. Has ANYONE ELSE had a similar experience???