What can you do to fix my lazy eye?

Depends: It depends what the lazy eye is from. If it is due to crossing or drifting, you can correct it back to a normal position, but if it has been present since birth, the vision may or may not improve. In rare instances, correcting a drifting eye could give you double vision. Sometimes an eye is lazy because the signal to the brain never formed appropriately. Not much can be done for that.