Cessation of ocular hypertensive attacks following iStent trabecular micro-bypass stent implantation in a patient with Posner-Schlossman syndrome: a case report

Background: Posner-Schlossman syndrome (PSS) is an ocular condition with self-limiting recurrent episodes of markedly elevated intraocular pressure (IOP) and non-granulomatous anterior chamber inflammation. Surgical treatment is indicated if medical therapy fails to control IOP. Case presentation: A 58-year-old male presented with intermittent attacks of blurred vision and pain in the right eye for 6 months. Examination revealed keratic precipitates with IOP of 56 mmHg in the right eye. Gonioscopy revealed open angles in both eyes. Erythrocyte sedimentation rate was within normal limits, while aqueous tapfor viral PCR, rapid plasma reagent test, and Mantoux test were negative. IOP was in the high-teens (inappropriate) on 2 topical antiglaucoma medications and the patient developed ocular surface problems. iStent was implanted. IOP remained stable within the mid-teens with no further episodes of raised IOP in the following 6 months. Conclusion: This case showed cessation of ocular hypertensive attacks in PSS after iStent implantation.