Ophthalmic manifestations and visual outcomes of granulomatosis with polyangiitis: a retrospective multicentre study in Korea.

Ophthalmic involvement is common in Korean GPA patients and should be considered in the presence of PR3-ANCA, sinonasal or brain involvement. Patients with positive ANA have an increased risk of optic nerve involvement, and early IV immunosuppressive treatments beyond oral steroids are necessary to improve the visual outcome.