Fuchs heterochromic iridocyclitis in a case of keratoconus

Purpose: To report a case of keratoconus associated with Fuchs heterochromic iridocyclitis. Case = A 28-year-old male presented with ocular hypertension with blurring in his right eye. He had been treated for iridocyclitis in the same eye since one month before. He had been diagnosed with bilateral keratoconus and been using hard contact lens. Findings = His visual acuity was 10 cm counting fingers right and 0.7 left when corrected by -30 diopters. Intraocular pressure (IOP) was 30mmHg right and 14 mmHg left. Both eyes showed typical features of keratoconus. The right eye showed iris atrophy and signs of inflammation in the anterior chamber, leading to the diagnosis of heterochromic iritis. Steroid glaucoma was ruled out. IOP in the right eye normalized after trabeculectomy with corrected visual acuity of 0.07. Conclusion ?' This case illustrates that keratoconus may be associated with heterochromic iritis. The association may be due to common embryological origin of iris and corneal stroma in the neural crest.