Figure 1.

(A) Photograph of the extraorbital surface of our custom IOP transducer housing that is secured within a ¼-inch hole in the lateral orbital wall with bone screws as shown in (B). A 23-gauge silicone tube delivers aqueous from the anterior chamber to a fluid reservoir on the intraorbital side of the transducer (partially hidden from view in [A]); the tube (with appropriate slack to allow for eye movement) is trimmed, inserted into the anterior chamber, sutured to the sclera by using the integral scleral tube anchor plate, and covered with a scleral patchgraft (not shown). Adapted from Downs et al.⁷ (C) Photograph of enhanced Konigsberg Instruments total implant system for continuous monitoring of bilateral IOP, bilateral EOG, aortic blood pressure, and body temperature.⁸