Well the swelling sounds like an allergic reaction. As for 'Crohn's inflammation in the eye', did they mean uveitis? It's not actually Crohn's: it's an inflammatory eye disease which is linked with autoimmune diseases like IBD, ankylosing spondylitis, etc. You can find out whether you are susceptible to these autoimmune conditions by getting tested for a gene called HLA-B27.
But first things first! You will need to see an ophthalmologist ASAP for a proper diagnosis. Particularly as the swelling part doesn't
sound like uveitis, but the rest of it does (inflammation, sensitivity to light. There is usually also redness and pain during a severe attack, but the steroid shot may have suppressed that).
I've had uveitis for 3 years and loads of flare ups and visits during to eye casualty during that time - it's been pretty miserable to be honest. I'm hoping it's something else which you have. But do see an ophthalmologist - it's essential. Good luck.
Dx Crohn's in June 2000. (Yay )
Tried: 5-ASAs, azathioprine, 6MP, Remicade, methotrexate, Humira, diets.
1st surgery 20/2/13 - subtotal colectomy with end ileostomy.
2nd surgery 10/7/15 - ileorectal anastomosis. Stoma reversed and ileum connected to the rectum.
Current status: Chronic flare. Do I have any other kind?
Current meds: 50mg 6MP; Entyvio (started 3/11/16)