The present invention is directed to an in-situ refillable ophthalmic implant (10) having a refill port (28) in communication with a reservoir (14) and a release control mechanism (24). The present invention also relates to methods of forming and using the ophthalmic implant. Preferably, the control release mechanism include opening [s] (50) providing for passive passage of pharmaceutical ophthalmic composition, particularly therapeutic agent, out of the reservoir, through the opening [s] and into the eye.
