A reservoir assembly for use in an ophthalmic fluid delivery device adapted to deliver an ophthalmic fluid in the form of a mist to an ocular region of a patient is provided, wherein the device has a lumen-defining component configured to deliver the fluid from the reservoir assembly. The reservoir assembly includes a reservoir defining an aperture and a cavity in fluid flow communication with the aperture, a fluid contained in the cavity of the reservoir, and a gasket traversing the aperture. The gasket defines a passage configured to receive a portion of the lumen-defining component and to permit the flow of the fluid from the cavity and through the aperture when the portion of the lumen-defining component is inserted through the passage. The gasket is also configured to substantially prevent the flow of the fluid from the cavity and through the aperture when the portion of the lumen-defining component is not inserted through the passage.