I personally had surgery in August of 2008 and I have had double vision the whole time. However, it has been quantitatively improving at a very slow rate now for the last 18 months. During normal eye movements I would say my eye moves about 50% of the way over, which is an improvement over not moving at all, rather it was plastered as far medially as possible. When I really really try, nystagmus and all, I would say it can move about 75% of the way laterally. I didn't see any improvement for probably 4 months I would say, and the eye wouldn't budge past the middle position for about 12-13 months I would say.