Inflammation in the iris of the eye causes iritis, a painful condition that can be aggravated by bright light (photophobia) as the iris opens and closes the opening of the pupil. (thepsoriasisprogram.com)
Unfortunately, I have a genetic marker HLA B27 that has predisposed me to recurrent bouts of iritis and now I am on the brink of being diagnosed with Ankylosing Spondylitis. (nutritionfacts.org)