There is only one thing somewhat specific about the sketch in your avatar. Right eye - somewhat "down and out". If I were to guess, I’d say, more likely, III nerve palsy, or Horner’s syndrome. I doubt that the witnesses were neurologists, so it is possible that another cranial nerve is involved (IV or VI), but no one would make a sketch looking like this unless they wanted to convey the message “pay attention to the right eye”.
It could be inborn (happens), even genetic, could indicate a serious problem or a trauma, or could be very mild, but it is there.
Given this “eye” and BG’s gait...are they a matching set, so to say? Or do they belong to different people? Could they indicate some prior trauma? Somewhere in his life, the guy should have seen a neurologist. JMO.