Advantages
- Detects intraocular pressure changes with sub-0.1 mmHg resolution for superior clinical precision.
- Battery-free wireless design enables safe, continuous monitoring through inductive telemetry technology.
- Biocompatible materials ensure long-term implantation with minimal risk and high patient safety.
- MEMS-based fabrication allows cost-effective, scalable production for broad clinical and home use.
Summary
Glaucoma is a major cause of irreversible blindness worldwide, primarily due to elevated intraocular pressure (IOP) that progressively damages the optic nerve. Current IOP monitoring relies on techniques like Goldmann applanation tonometry, which are limited by corneal variability, require frequent in-clinic visits, and only provide snapshot readings. These limitations make it difficult to track pressure fluctuations and intervene early in disease progression.
This invention introduces a wireless, battery-less MEMS capacitive pressure sensor designed for implantation inside the eye. The device uses a resonant LC circuit to detect pressure-induced changes in capacitance, enabling real-time, continuous IOP monitoring across 0–50 mmHg with sub-0.1 mmHg resolution. Its biocompatible materials and scalable MEMS fabrication allow safe long-term use, while the wireless design supports future integration with handheld or wearable readout devices for at-home glaucoma care.
IOP sensor test scheme, where a water balloon, a pump, and a reference liquid pressure sensor, as well as a readout coil and a vector network analyzer are used.
Desired Partnerships
- License
- Sponsored Research
- Co-Development