To report a case of secondary pigmentary glaucoma due to clofazimine treatment for extensive drug-resistant tuberculosis.

A 23-year-old man presented with blurred vision in both eyes. The patient started to take clofazimine for extensive drug-resistant tuberculosis six months prior, after which his facial skin color changed to a dark-brown. Intraocular pressure (IOP) was 50 mm Hg in the right eye and 48 mm Hg in the left eye. Slit lamp examination revealed corneal edema, opacity, and flare in the anterior chamber in both eyes. A color vision test revealed a mild color defect in both eyes. Visual field (VF) test revealed superior temporal VF loss in the left eye. Gonioscopy revealed open angles with high pigmentation in the trabecular meshwork in both eyes. The patient was diagnosed with pigmentary glaucoma, and maximum tolerated medical therapy was performed. However, the IOP was uncontrolled. Trabeculectomy was performed in both eyes. Postoperative IOP was measured to be 12 mm Hg in both eyes without medication, and visual acuity measured 20/22 in the right eye and 20/17 in the left eye.

To the best of our knowledge, this report is the first case of clofazimine being a possible cause of pigmentary glaucoma in a patient with extensive drug-resistant tuberculosis.