Inflammation of the iris is called iritis (the iris is the part of the eye that determines its color), and sometimes the ciliary body behind the iris can become inflamed as well. When the iris becomes inflamed, tiny white cells in the inflamed area and too much protein from the small blood vessels in the eye float in the atrial fluid between the iris and cornea. If there are too many cells floating in the atrial water, they attack the back of the cornea and also settle in the atrial water. The cause of iritis is unknown. One eye or both eyes may be affected. An ophthalmologic examination and set light examination may be done, and it is more important to pay attention to changes in the signs and symptoms of inflammation of the iris. 1. Inflammatory phase: Appears in all areas of the iris and is golden in color, indicating signs of inflammation in the body. 2.Sub-inflammatory phase: the area is teal in color. 3, chronic phase: dark brown, indicating that the reflex area has the phenomenon of functional decline of tissues and organs. 4.Degenerative stage: dark black, indicating that most of the reflex tissues and organs have lost their functions and may form tissue lesions, especially the formation of tumors. Iritis may present with posterior corneal deposits (KP), inflammatory cells in the anterior chamber, clouding of the atrial fluid, or exudation in the anterior chamber. Some patients may present with elevated intraocular pressure, pupillary constriction, or posterior adhesions.