Sometimes(but rarely) distant objects become double. In other words double vision. But when I inhale tobbaco smoke I immediately get a double vision experience of distant objects. I have quit smoking now but it has happened enough times that I know smoking induced that double vision. Is it the carbon monoxide or what that causes it. Ive had many tests done(MRI, Ultra Sound, etc.) but nothing gives any information on what it might be. Anyone else experiece this?