Convergence in left eye. Please help me.

I am facing difficulty in my left eye as it is difficult to see one particular object( there is no pain )and also it feels like something is there in my left eye. while doing pen exercise i can clearly feel the difference between left and right eye right. It feels like left eye vision is somewhat deviating while the right is converging properly and there is no deviation but left eye feels like deviating and not able to converge properly while doing pen exercise and not able to adjust itself  any particular object instead deviates on left but their is no squint and left aye is Normal with appearance but there is accomodation difference between left and right eye . And i already have done basic tests, dry eyes test , Lasik but nothing found please help me.