Characteristics and Visual Outcome of Refractory Retinal Vasculitis Associated With Antineutrophil Cytoplasm Antibody-Associated Vasculitides.

Purpose: To describe the clinical characteristics, therapies, visual outcomes, and prognoses of patients with retinal vasculitis associated with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV).
Design: Retrospective case series.
Methods: Patients diagnosed with retinal vasculitis associated with AAV and at least 6 months of follow-up were included. Demographic data, systemic and ocular features, best-corrected visual acuity at the initial visit and latest visit, fluorescein angiography (FA) and indocyanine green angiography (ICGA) findings, therapy regimen, and outcome were collected from the Massachusetts Eye Research and Surgery Institution (MERSI) database from 2006 to 2017.
Results: Fourteen patients (22 eyes) were identified. Twelve had granulomatosis with polyangiitis (GPA) and 1 each had microscopic polyangiitis (MPA) and eosinophilic granulomatosis with polyangiitis (EGPA). FA showed that AAV affected small-to-medium-size retinal vessels. Seven cases (50%) had both vein/venule and artery/arteriole involvement. Four cases co-presented with choroidal vasculitis. All of them failed various immunomodulatory therapies prior to referral to MERSI. Six patients received rituximab plus prednisone as their final therapy and 5 of them achieved remission. Four patients who failed cyclophosphamide previously were induced into remission by rituximab. Patients were followed for 33.4 ± 25.5 (range 6-84) months. Nine of 14 patients (64.3%) achieved remission at their latest visit. Seventeen of 22 eyes (77.3%) met the criteria for a good (≥20/40) visual outcome.
Conclusion: The majority of patients enjoyed a good visual outcome and achieved remission after aggressive treatment. Rituximab should be considered as an initial treatment for patients with refractory retinal vasculitis associated with AAV.
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