:This is all very new to me and I'm learning as I go but...I notice I have a difficult time now adjusting to changes in light as in coming in from outside or vice-versa. Its extremely difficult to focus . My eyes in general are becoming a problem. s difficult to focus and see clearly with my left even with my glasses. My balance stinks..often feel like a drunken sailor. If I get up during the night to use the bathroom I'm bouncing off furniture and walls. I now keep night lites in kitchen and bath because its easier to move around. I have hypertension but lately have started with an irregular heart beat and palpitations. Looking for others with polyneuropathy and autonomic nerve involvement. : How is your balance in light and darkness? Any heart problems? : Thank You.