The first time I had pain on eye movement and then over the course of 2 or 3days, lost the color, brightness and then the vision completely. It came back within a month or so. Subsequent bouts of it were simialr to the first but I never lost the vision completely.

It has left very large blind spots in the center and upper areas of the visual field and the above symptoms of ON come back if I get overheated, over tired or ill.

Have you had ON before this? If so, maybe the combination of heat and fatigue obstructed the symptoms from being compensated for. That's what seems to happen in my case.

With love, Erika