Are you on any medication that could possibly cause these side effects?
I've had it all along before I took medication... :S
I always see blurry vision among the symptoms of autonomic disfunction.. so that calms me down a bit.. but still.. it's annoying :)
Are the visual symptoms constant? My vision sometimes darkens before I pass out, but it's not something I have to deal with constantly. It could be autonomic, but I would ask a doctor before I made that assumption.
I can notice a change in it.. like yesterday I made an exam and my vision was fine at the beginning but after 3 hours of concentration I looked up and couldn't see a thing anymore.. it was all blurry... so my guess and other guys guesses are or.. it's because of the cerebral hypoperfusion or it's from the inability to focus the pupils because of autonomic dysfunction.. it's really annoying..
by the way my vision also darkens sometimes when I stand up and then I go into presyncope... the good thing is I feel it coming and I can sit down before I pass out :)
My daughter's problems started with near syncope and transient vision loss. Her 1st episode: she was blind for 8- 10 mins (at age 12). Since then (5 yrs ago) she has total vision loss 15-20 times a day every day, generally when walking, but it lasts less than a minute each time.
1 yr ago, started with all kinds of neurological issues, constant nausea, constant headache pressure at base of skull, body temp regulation problems, lots of gastric reflex problems, Bowel issues, fatigue, possible absence seizures, orthostatic hypostension, POTS, etc. Her vision will get blurry and last for hrs, or have spots that lasts for mins, or have temporary peripheral vision loss.
So far she is not on meds because she has just been diagnosed with dysautonomia. We are waiting to see a doctor that knows more about this to start treating her.