# iOP-Connect System for Long-Term Continuous Monitoring of Glaucoma Therapy by means of an Implantable Autonomous Intraocular Pressure Sensor

> **NIH NIH R44** · INJECTSENSE, INC. · 2023 · $624,000

## Abstract

Project Summary
The iOP-Connect system is a medical device that incorporates novel microelectronics technology and
data science to revolutionize glaucoma patient care by enabling long-term continuous monitoring of
glaucoma therapy effectiveness. The iOP-Connect is the only continuous IOP-monitoring system
technology to receive a Breakthrough Device Program designation from FDA.
The goal of this Phase II project is to build on prior successful “Feasibility” outcomes (Phase I equivalent) by
implementing innovative advancements in the iOP-Connect system design to achieve a final product
configuration and prepare for future pivotal clinical study(s). The outcomes will inform and drive the rigorous
GLP animal and clinical studies roadmap to generate safety and effectiveness data to support FDA approval.
The iOP-Connect system innovates IOP measurement/monitoring beyond the current gold standard and, for the
first time, enables real-time (e.g., daily remote) assessment of IOP-reduction effectiveness for glaucoma
treatment. Injectsense enables this product by engineering innovative product features such as: 1) long-term
ocular implant (IPM) with in-vivo safety and pressure sensor stability, 2)direct measurement of true IOP
intravitreally, and 3) microbattery-enabled autonomous (non-disruptive) continuous logging of uninfluenced IOP.
The IPM is the core enabling innovation of the system and is built on Injectsense’s proprietary microfabrication
technology. The IPM is a millimeter-scale, long-term implantable device. It combines a capacitive
microelectromechanical system (MEMS) pressure sensor, a sampling and digitizing application-specific
integrated circuit (ASIC), an energy storage layer (battery), and a telemetry coil integrated and enclosed in an
injectable carrier.
In Feasibility studies, Injectsense used fundamentally novel miniaturization and packaging technologies to
develop a functional implantable prototype (without the microbattery). Short-term non-GLP animal studies
demonstrated: 1) the prototype can be safely implanted in the eyeball using a minimally invasive procedure with
no adverse effects, 2) the prototypes were able to transmit IOP data on demand for one week, and 3) the IOP
measurements were within 3mmHg of a reference tonometer.
The Phase II objective is to develop a production-ready system that performs autonomous continuous
measurement and logging of IOP data and telemetrically transmits the data via IOP-Connect. Aim 1 is to design,
develop and build an implantable autonomous IOP sensor module, where the existing pressure sensing module
incorporates: 1) a custom LiPON (lithium phosphorus oxynitride) solid-state microbattery for autonomous IOP
data collection, and 2) an embedded ceramic inductor to improve reliability and stability of power transfer and
telemetry. Aim 2 is to conduct non-GLP animal testing to verify in-animal autonomous system efficacy.

## Key facts

- **NIH application ID:** 10556408
- **Project number:** 5R44EY033565-02
- **Recipient organization:** INJECTSENSE, INC.
- **Principal Investigator:** Kevin Douglas BERG
- **Activity code:** R44 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2023
- **Award amount:** $624,000
- **Award type:** 5
- **Project period:** 2022-02-01 → 2025-01-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10556408

## Citation

> US National Institutes of Health, RePORTER application 10556408, iOP-Connect System for Long-Term Continuous Monitoring of Glaucoma Therapy by means of an Implantable Autonomous Intraocular Pressure Sensor (5R44EY033565-02). Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/grant/nih/10556408. Licensed CC0.

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