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This paper presents implantable monitors developed for treatment of glaucoma and cardiac disease. The CMOS chip enables wireless telemetry, powering at 2.4 GHz, and digitizes and stores data from a MEMS sensor into FeRAM. A 24 Â¿F capacitor array for power storage enables independent operation over a 24-hour period. The system demonstrates a 0.5 mmHg resolution over a 0-to-50 mmHg range.