“… 4 Paradoxical ophthalmologic reactions, including uveitis, sarcoid uveitis, scleritis, optic neuritis, diplopia, and visual field defects/scotomas have been reported in TNF-α inhibitors. 5 Ustekinumab (Stelara, Janssen Biotech Inc.) employs a different mechanism of action than the older anti-TNF agents. 6 It is an anti-p40 IL-12/IL-23 human immunoglobulin monoclonal antibody that reduces levels of IL-12/IL-23, which in turn downregulates multiple pro-inflammatory cytokines, such as TNF-α, IFN-γ, and IL-2.…”