The invention provides a sustained release intraocular drug delivery device comprising: (a) a polymeric matrix core into which at least one therapeutic agent is mixed, and (b) a polymeric coating completely surrounding said polymeric matrix material wherein said polymeric matrix core and polymeric coating are insoluble and inert in ocular fluids, and wherein said sustained release intraocular drug delivery device has a compliant annular segment shape and is to be inserted into the sulcus of the intact and/or pseudophakic eye.
