Have you been checked for Lyme disease? I've had RSD since 2002 and started having problems with my left eye in 2009. I saw many specialists including those you referenced in your post. No one was able to link my eye problem to the RSD but didn't know either what the cause was. I've been through numerous tests including those for Lyme, all results came back negative. Facial palsy is a symptom of Lyme and despite the numerous negative test results it was ultimately confirmed as positive for Lyme disease a couple of months ago. After a course of 5 weeks on antibiotics it seems that my eye is back to normal. Unfortunately I still have the RSD pain but I hope the Lyme bacteria has been killed.