Sounds like caution is probably warranted in your case since you have had issues and your eye surgeon urges caution. When I was on a bike trip in New Zealand I did a bungee jump but two doctors on the trip refused, saying their were afraid of PVD. The bungee jump did not result in a jerk -- it was a gradual deceleration. And these docs were not eye specialists. I suspect they were no more knowledgeable about the actual risks than I was.