Actually,i am having a bad vision in my left eye and the eye ballof the left eyelooks small,also my left eye keeps wandering compare with the rightone?

See eye doctor soon: If your left eye has bad vision, seems smaller, and keeps wandering, your eye doctor can tell you whether it's amblyopic (seeing eye with vision) or lazy eye, or neither. Depends how long that eye has been doing it. All your life? Or just recent changes? A slit lamp microscopy exam will also look at other causes in your cornea, iris, retina that may be causing problems. So don't delay!