Immunoglobulin G4-related ophthalmic disease – what is it? (Part 1)

Part 1: Epidemiology, classification, radiology, histopathology and associations (see Part 2 here) In this two-part series, Li Yen Goh reviews IgG4 disease and reminds us of diagnostic challenges faced. Introduction Immunoglobulin G4 (IgG4) disease is a recently recognised idiopathic systemic...