Hi. I'm online and happy to answer your question today.
Graves orbitopathy is caused by antibodies that actually attack the muscles and tissues around the eyes and are not directly correlated to the state that the thyroid is in. As such, retreating his thyroid gland may not have any effect on the activity of his Graves orbitopathy.
Here is an excellent article that explains this concept in detail:
Treatment options very depending on the stage of the disease. It can involve orbital surgery to decompress the optic nerve, eyelid surgery to cover the cornea and keep it from drying out, oral steroids to decrease inflammation and sometimes even radiation therapy or chemotherapeutic agents are used.
Does this make sense to you?
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I see that you are offline. I'll switch over to the Q&A system. This system works a lot like 'text messaging' but an email is sent to each of us anytime something is posted to this thread. We can continue to work on your question there..... :)