Hi Maddie
Firstly, RA can and does affect the eyes of several of us. There is a secondary disease called "secondary Sjorgren's syndrome" which causes extreme dryness, soreness and sometimes itchiness. This disease affects ALL bodily fluids, so you can find your mouth very dry too and also other "bits"

Such a joyful thing!!!!
You don't actually say how RA seems to be affecting your eyes, and if you have a minute to post on that, we could perhaps help more.
If you DO have Sjorgren's, it is usually treated with drops or, if the eyes are bone dry, there is a small op you may be offered where a tiny tiny stainless steel rod is put in the tear ducts to stop the tears from flowing away.
Sorry you have this horrid disease
Love Jeanxxxxx