When the base plate 12 is surgically installed underneath a flap (not shown) that is surgically performed within the eyeball (not shown), and the tube 14 is installed as previously mentioned within the anterior chamber, the aqueous humor from the anterior chamber is capable of flowing through the passage 16 to within collecting chamber 60 of the housing 20. From the collecting chamber 60, the fluid seeps through the porous block 22 and passes through access opening 50 into internal channel 58. From the internal channel 58 the aqueous humor is conducted onto the outer surface of the base plate from where it is then discharged into the conjunctival space. For a pars plana application, the tube 14 will be formed at an angle (usually about ninety degrees) to the longitudinal direction of the pressure regulator 10 shown in FIG. 4 to more appropriately place the tube 14 in the pars plana portion of the eye.
The pliant polymer is preferably gutta percha. As obtained naturally, gutta percha comprises the purified exudate of various trees of the genus Palagunium, Sapotaceae. A synthetic form of gutta percha is trans-1,4-polyisoprene. Advantages of gutta percha is that it improves pliability, compressibility and low permeability of a dental composition. Additionally, gutta percha is inert to dental and periapical tissue. A person of ordinary skill in the art will appreciate that it is also possible to use other synthetic or naturally occurring pliant materials that exhibit similar characteristics, such as balata. The concentration of the pliant polymer in the core material is between about 10 and 30 percent.