Abstract: A medical device for treating a patient suffering from glaucoma is adapted to be attached to the globe of the eye of a patient. It includes a distribution plate having a one-way flow valve attached to the anterior end of the plate. The valve is adapted to be placed in communication with fluid to be drained from the intraocular chamber of the eye. There are opposed tab elements that extend outward from each side of the plate at its posterior end. The plate has a predetermined size and shape so that, when attached to the globe of the eye between adjacent rectus muscles with the anterior end from 8 to 10 millimeters from the limbus of the eye, the width of the plate is sufficiently restrictive so that one side is close but not touching one rectus muscle and the other side is close but not touching the other rectus muscle. The length of the plate is sufficiently restrictive so that the posterior end is at least 2 millimeters from the optic nerve of the eye.