Uveitis refers to intraocular inflammatory diseases that are an important cause of visual loss. Standard systemic immunosuppressive medications for uveitis can cause significant adverse effects. Consequently, an effective treatment with a safer side effect profile is highly desirable. Daclizumab is a humanized anti-Tac monoclonal antibody directed against the high affinity IL-2 receptor CD25 or Tac subunit. The IL-2 receptor system plays a central role in the induction of immune responses via activated T and B-lymphocytes, observed both in uveitis animal models and on the surface of human cells in patients with uveitis. Blocking this system impedes immune responses and can inhibit the development of local inflammatory responses. Previous studies using intravenous daclizumab treatments suggest that continuing daclizumab treatments at 1 mg/kg every 2-4 weeks may effectively control uveitis even after the complete withdrawal of standard immunosuppressive medications. Subcutaneous (SC) daclizumab injections at 1 and 2 mg/kg in healthy volunteers are well tolerated and have been shown to produce serum daclizumab trough levels comparable to intravenous treatments.