I believe the statistic is less than 50% of those who have
Graves thyroid
disease develop any symptoms of
Graves Eye
Disease. Each is caused by different sets of antibodies. Some people get eye disease without ever having thyroid problems. And, of those with Graves/thyroid who do develop eye disease, only about 5% of those ever develop serious enough eye problems (bulging, eyelid retraction, double vision, optic nerve issues) to warrant surgery.