“…41 The cases listed in Table 1 and referred to above appear, with limited variation, to adhere to Ito's original description of a primary idiopathic FBA. However, other cases of FBA, often localised, have been described, which appear either to be secondary to intraocular infection by CMV, [51][52][53][54][55][56][57][58] HSV (confirmed by aqueous PCR), 59,60 herpesvirus hominis, 61 toxoplasmosis 62 or Fusarium dimerium, 63 or in association with systemic lupus erythematosus, 64 Crohn's disease, 65 lymphoma, 66 leukaemia 67 and Behçet's disease (our own unpublished case, Figure 4). In summary, Frosted branch angiitis in typical form, unassociated with preexisting intraocular inflammation, is likely to be a primary immunological process in response to a number of provoking antigens.…”