QUERY ABOUT SQUINT. Lasik? yoga helps?

I was born after 31 weeks. I had perfect eye alignment and perfect vision then. When I was 6 years old, due to excessive computer gaming, my right eye developed squint. Operated immediately for Squint and after that the eyes were fine even in follow-ups. But, since the age of 22, same eye has intermittent extropia. Whenever I stare or work on PC for a long time, it appears, after smtimes it becomes fine. I checked my vision in 3 hospitals, 2 hospitals said that my VA in right eye is 6/9, but 1 hospital said it is 6/18 or more, ( the surrounding lights were seemed  dimmer in dat room). Is there some problem in the development of retina? Why squint arrived again after so long time that too is intermittent? Now if I go for Squint surgery, will my vision in that eye improve or worsen? ( As till the age of 6 my eyes were fine and probably development of retina takes place till 6 years of age). I posted same ques earlier but didn't get satisfactory reply. What if I go for LASIK ? Yoga helps?