Bioerodible drug delivery devices

A method of treating an eye disease or disorder in a patient, the method comprising

• identifying an area of a patient's eye in need of treatment;
• implanting a bioerodible drug delivery device in sufficient proximity to the area in need of treatment to provide therapeutic relief, wherein the bioerodible drug delivery device comprises
• a bioerodible drug core comprising a pharmaceutically active agent and polyvinyl alcohol,
• a bioerodible outer member that substantially surrounds the drug core, wherein the bioerodible outer member comprises poly(lactic-co-glycolic) acid (PLGA) where lactic acid/glycolic acid is present in a molar ratio ranging from and including 82:18 to 85:15;
• and
• at least one delivery port that is permeable to the pharmaceutically active agent;
• wherein the device is configured to be injected into the vitreous of the patient's eye;
• and
• wherein the device is configured to provide a substantially constant dosing rate of the pharmaceutically active agent for at least one month.