Devices can be implanted in an eye to treat glaucoma. The devices described herein include a body defining a lumen and having first and second ends and external and lumenal surfaces. The body has a length sufficient to provide fluid communication between the anterior chamber and tear film of the eye through the lumen when the device is implanted in the sclera. By the strategic selection of particular materials of construction, and/or by controlling the configuration and size of the lumen, in some embodiments, the device is a filterless construct. In some embodiments, a filter is included. The glaucoma treatment devices as provided herein are designed to prevent bacterial ingress and to provide the required level of outflow resistance to achieve a desired intraocular pressure. Methods of treating glaucoma wherein the device is implanted in the sclera of an afflicted eye are also described.
