First, FBI agents must be legal citizens of the United States and must have lived in the U.S. for at least three of the last five years. They must also have a clean record, with no felony or domestic violence convictions and no failures to make any child support, student loan or tax payments.
I also have double vision, especially in my left eye. My diagnosis (eleven years ago) is Sporadic Cerebellar Ataxia (unknown cause/symptoms 24/7). Several years ago, I ...I also have double vision, especially in my left eye.
This is called proprioception, and two regions of the brain are responsible for proper proprioception: the forebrain and the cerebellum (at the base of the brain). To complicate matters further, damage to the vestibular system (which tells the body where it is in space) and the brainstem can also cause ataxia.