Several years ago, about 20, I developed a sudden eye problem seemingly over night. The eye doctor called it iritis, and I still on occasion will experience pain in that eye in bright light conditions. I never developed the redness or pinkness to the eye whites but my pupil was fully open. The doctor gave me a gel type antibiotic ointment to put in and a patch to keep the light out of the eye when it really bothered me.

The doctor said it was a pretty rare thing, if you have an ophthalmologist ask him/her about it, a regular doctor may not be familiar with it. It took about 3 weeks to where I no longer had to put the eye patch on if I remember right. (sunglasses did not help much).