In simple words: Tuberculous iridocyclitis is a rare eye infection caused by tuberculosis bacteria.It affects the colored part of the eye and can cause pain, blurry vision, redness, and light sensitivity. Doctors diagnose it through tests and treat it with medication.

Tuberculous iridocyclitis is a rare manifestation of extrapulmonary tuberculosis (TB) affecting the anterior chamber and iris of the eye.It results from reactivation of Mycobacterium tuberculosis bacilli, less commonly Mycobacterium bovis, lodged in the area from a prior infection or direct introduction via an open wound.Patients may present with eye pain, excessive tearing, blurred vision, redness, photosensitivity, and irregular pupil, potentially leading to vision loss. Diagnosis involves cultures and PCR studies of blood and intraocular fluid, tuberculin skin testing, and review of TB history. Biomicroscopy and intraocular imaging may reveal characteristic findings. Treatment typically involves antituberculous chemotherapy (isoniazid, rifampin, rifabutin, pyrazinamide, ethambutol), with alternative drugs considered if necessary.

Example 1: A 45-year-old male with a history of latent tuberculosis presents with eye pain, redness, and blurred vision.Ophthalmological examination reveals iridocyclitis.Cultures and PCR of intraocular fluid are positive for Mycobacterium tuberculosis.The patient is started on antituberculous chemotherapy., A 60-year-old female with a history of treated pulmonary tuberculosis develops iridocyclitis.Diagnostic workup confirms the diagnosis. The patient is managed with antituberculous medications and regular ophthalmological follow-up to monitor treatment response and prevent vision loss., A 30-year-old immunocompromised patient sustains an eye injury resulting in introduction of Mycobacterium tuberculosis. They develop iridocyclitis.Treatment is initiated with antituberculous drugs, adjusted based on the patient's immune status.

Complete ophthalmological examination findings; results of cultures and PCR studies from blood and intraocular fluid; tuberculin skin test results; imaging studies (biomicroscopy, intraocular imaging); patient history of tuberculosis; documentation of medication administration and treatment response; visual acuity measurements.

** This code should be used in conjunction with other codes to fully capture the patient's clinical picture, especially if there are other manifestations of tuberculosis.Consider using codes to indicate the severity of the disease and complications.