Iritis - an inflammation of an iris or an iris and a ciliary body (iridocyclitis). An etiology: a tuberculosis, a toxoplasmosis, rheumatic disease, a flu, a lues, a canicola fever, a gonococcal infection, illnesses of a metabolism, focal infections, wounds of eyes, operations on an eyeglobe, purulent processes in a cornea.

Pathogenesis: influence of the originator or its toxins on a forward department of a uveal tract; reaction of an iris and a ciliary body, being a condition of a sensibilization, on action of a microbial or autoimmune antigen. Disease, as a rule, proceeds in the form of an iridocyclitis. The isolated lesion of an iris meets extremely seldom.

Signs. A pain amplifying at a palpation of an eye; the pericorneal or admixed injection of an eyeglobe. The iris is hydropic, greenish or rusty color, its drawing indistinct. The pupil is narrowed, reaction to light is slowed down. On a surface of an iris and on a back surface of a cornea of adjournment of an exsudate - precipitates. The moisture of the forward chamber quite often grows turbid, on its day the clump of purulent cells is formed. Sometimes there are hemorrhages on surfaces of an iris and a deposition of a blood for a bottom of the chamber in the form of a hyphema. Between pupillary edge of an iris and a forward capsule of a lens solderings - synechias are formed. Current of an iridocyclitis can be acute and chronic. Duration of acute forms of usually 3-6 weeks, chronic - some months with predilection to relapses, especially in a cold season. At changes in refracting mediums of an eye visual acuity decreases. The differential diagnosis. The acute iridocyclitis differs from an acute conjunctivitis absence separated, presence of a pericorneal injection of an eyeglobe, change of an iris, a pupil. It is important to distinguish an acute iridocyclitis from an acute attack of a glaucoma at which the ophthalmotonus is raised, a cornea muddy, it is hydropic, is available congestive, instead of inflammatory, an injection of vessels, a pupil (before application of miotocs) it is dilated, the forward chamber fine, the pain is localized not in the eye, and in a corresponding half of head.