A Simple Conditioner for Resonant Intraocular Pressure Sensor

Trench Etched Resonant Pressure Sensor: TERPS

INTRODUCTION High precision pressure sensors based on resonating techniques have been manufactured for many years but use large transducer components and often have unwieldy media isolation techniques. This paper presents a MEMS Resonant Pressure Transducer (RPT) that is produced using a flexible fabrication route to allow pressure ranges from 1bar to 700bar in fully oil isolated hermetic packa...

Polymer-based miniature flexible capacitive pressure sensor for intraocular pressure (IOP) monitoring inside a mouse eye.

This paper presents an ultra-thin and flexible polymer-based capacitive pressure sensor for intraocular pressure (IOP) monitoring in a mouse eye. Due to the size limitation of the anterior chamber in the mouse eye, a volume of approximately 700 × 700 × 150 μm(3) on a small substrate is available for the MEMS capacitive pressure sensor. Moreover, the sensor would ideally be easily injectable int...

Determination of Central Venous Pressure from Intraocular Pressure

Background: In many clinical situations, knowledge of central venous pressure (CVP) is important.  Measurement of CVP is not always possible. Objective: To determine if intraocular pressure (IOP) can be used as an estimate for CVP. Methods: IOP and CVP were measured concurrently in 30 candidates of coronary artery bypass graft surgery.  Those with carotid artery or jugular venous diseases as we...

Nanoarray-enhanced Implantable Intraocular Pressure Sensor with Remote Optical Readout

We demonstrate a compact implantable intraocular pressure sensor with remote optical readout for glaucoma research and patient management. Using broadband white light between 7801150nm, we excite the sensor’s pressure-sensitive optomechanical cavity and detect the reflected light, whose optical signature changes as a function of intraocular pressure. When measured inside an artificial pressure ...

High-quality-factor Parylene-c- Based Intraocular Pressure Sensor