“…The review of the literature revealed that optic neuritis represents the 46.4% (124/267) of cranial neuritis in SS patients [7, 18, 19, 24, 34, 36, 43–45, 49, 54–56, 59, 63, 65–68, 70, 72–75, 77–81, 83, 85–93, 95–97, 100, 104]; it is often bilateral with contemporary [65, 67, 68, 70, 85, 89, 95, 97] or sequential [36, 63] occurrence. In a few cases, neuritis was associated with CNS involvement, such as brain vasculitis [34, 77], acute transverse myelopathy [43, 67], myelitis [77, 80, 83, 90], aseptic meningitis [70], or multiple sclerosis-like features [80, 91].…”