Unfortunately I was right, the eye was worse. Dr B put on a pair of crazy looking glasses with microscopes in front to examine Noah's eye. From the look on his face and his "hmmmm" reaction, I knew it wasn't good. He said there was corneal edema and we needed to check his pressure.
Noah wasn't crazy about the pressure check but the doc repeated it three times to be sure it was accurate. The pressure in the good eye was 6, the pressure in the bad eye was 12. Both readings are within the normal range but they shouldn't be so far apart. The diagnosis is anterior uveitis, a serious infection.
We started Noah on some different eye drops and a strong antibiotic plus prednisone. I'm pleased that after only a couple days, Noah is opening his eye and not squinting anymore. The redness has come down quite a bit and though the eye doesn't look normal yet, it looks much more like a normal eye than it did a few days ago.
Noah is tolerating the new meds well. He sits very quietly for his drops because there's a special treat afterwards. The pred hasn't caused too many extra runs outside and none during the night. He's such a good boy and this all seems very unfair.