pSivida Corp. develops drug delivery products primarily for the treatment of chronic eye diseases. The Company operates through the biotechnology sector segment. The Company has developed three products for treatment of back-of-the-eye diseases, which include Medidur for posterior segment uveitis, its lead product candidate that is in pivotal Phase III clinical trials; ILUVIEN for diabetic macular edema (DME), its lead licensed product that is sold in the United States and European Union (EU) countries, and Retisert. Medidur is designed to treat chronic non-infectious uveitis affecting the posterior segment of the eye (posterior segment uveitis). ILUVIEN is an injectable micro-insert that provides treatment of DME from a single injection. Retisert is an implant that provides treatment of posterior segment uveitis. Its product development program is focused on utilizing its two technology platforms, Durasert and Tethadur, to deliver drugs and biologics to treat chronic diseases.