I have recently got my lasik done....the first time I got it done, only my right eye for done but my left eye was not done as the machine dint dock. My left was later done 3 weeks later. After about 5 months both my eyes have got an enhancement done again to remove the residual fraction left earlier but my left eye has gone back to having the same cylindrical number as it was before doing the first lasik. Is this possible?