I am in remission fro Graves Disease. I haven't got TED but for quite a while before I was finally diagnosed I had problems with my vision.
Basically I think most of my symptoms came from having extremely dry eyes. It's surprising (well it was to me!) the effect that dry eyes can have on your vision.
I use preservative free artificial tears several times a day. I'm using Theolose Duo at the moment but I also like Xailin drops and HycoSan Extra.
I just carry a bottle in my bag and shove them in either when my vision is blurred and I realise I'm not seeing as clearly as I could or just regularly throughout the day in which case my vision tends to be better. I was given a sample of Theolose Duo Gel to try at night time and while it is more liquid than gel tears it is really good. I put the drops in as I put off my bedroom light so I close my eyes on it. Definitely one of the best I have ever used and I've tried a lot of that sort of thing. I do think that eye drops are a matter of personal preference though.
I find if my eyes get too dry my muscles just don't work well and I can't read for long, the vision gets blurred, then when I look up I can't see in the distance. They also get sore and feel as if I have got something in my eye. It is really not nice at all.
I went totally gluten free in September last year in an all out effort to reduce my antibodies and I would say it is working well.
In September last year when I started my antithyroidperoxidase was 31.3 (<34) and my antithyroglobulin was 410.0 (<115).
In July this year after being totally gf my antithyroidperoxidase was <5 (<34) and my antithyroglobulin was 140.8 (<115)
140.8 is still too high but it is far less than it was back in September so I'm hopeful it will keep coming down so I'm going to stick with being gluten free. It isn't very difficult really and I've found that most restaurants and eating places are GF aware. My coeliac friend is fine about non-coeliac people eating gf - he says it is because of people like us that coeliac snow have so much choice when eating out. I joined CoeliacUK and got their amazing 'bible' - a book with lists of every sort of food you can imagine and where to buy it. It is definitely worth the annual subscription.
The worst I've come across is my neighbour who had a BBQ recently, and whose daughter baked masses of wonderful cakes - all with regular flour - then when I admired them and said how sorry I was that I couldn't sample them said "Yes I know you are flourless but I can't organise just for one, unless it is really medical". Considering I've always done exactly that for a group that I cook for - well actually I don't, I make everything I make for the day gluten free and everyone has that.
So if you do try gf it's probably better just to tell people like that that you are coeliac.
Good luck with the vision - start with a couple of days of 'eye drop overload' then just use them regularly through the day and put a gel of some sort in for the night.
Oh and you can buy a thing called an eye bag that you microwave for 30 seconds then lie down and put it over your eyes - sometimes I get a film like mucus that floats about and the heat of the eye bag gets rid of that - if you use it regularly - you can also squeeze a facecloth out under hot water and hold that against your eyes,I do that too but the eye bag holds the heat for longer. If you buy one make sure it has a removable cover that you can wash - the one I'm using at the moment doesn't have that and it isn't washable.
Ask your local optician what samples they have. I don't know about large chains but my local independent optician is very good at giving me whatever free samples they have. I also think they also have a better stick of preservative free products or they certainly used to.