Medical contact lens embedds wireless MEMs sensor
March 25, 2010 // Julien Happich
STMicroelectronics announced it will develop and supply a wireless MEMS sensor that acts as a transducer, antenna and mechanical support for additional read-out electronics in a breakthrough platform developed by Swiss company Sensimed AG. This solution will enable better management of glaucoma patients via earlier diagnosis and treatment that is optimally tailored to the individual patient.
Known as the Sensimed Triggerfish, the solution is based on a smart contact lens that uses a tiny embedded strain gauge to monitor the curvature of the eye over a period of, typically, 24 hours, providing valuable disease management data that is not currently obtainable using conventional ophthalmic equipment.
Glaucoma3, the second most common cause of blindness around the world, is an irreversible progressive disease of the optic nerve that can eventually lead to blindness.
Although it cannot be cured, its progress can be controlled once it is diagnosed and treated properly. The standard test is the measurement of intra-ocular pressure (IOP), using an instrument known as a tonometer, during periodic visits to an ophthalmologist.
However, the tonometer may fail to detect an elevated IOP, especially in glaucoma patients, because the pressure varies during the day and often peaks during sleep or outside of office hours. As a result, the disease is often diagnosed only after significant damage to the optic nerve has already occurred, and the disease keeps progressing in many patients due to inadequate treatment.
Sensimed's ingenious solution is a two-part system comprising the smart contact lens and a small receiver worn around the patient's neck.In addition to the strain gauge the lens contains an antenna, a tiny dedicated processing circuit and an RF transmitter to communicate the measurements to the receiver.
The lens is powered via the received radio waves and does not need to be connected to a battery. The embedded components are positioned in the lens in such a way that they do not interfere with the patient's vision. The lens is fitted by the ophthalmologist and when the patient returns the next day the ophthalmologist removes the lens and receiver, obtaining a complete record of IOP changes over the preceding 24 hours.All news
Porsche connects infotainment to cloud with HTML5
April 16, 2014
For some time, HTML5 is regarded as a kind of Swiss Army knife for automotive infotainment developers. Car manufacturer Porsche ...
Anglia signs with DEM Manufacturing
RFMW Ltd to distribute Aviacommís transceivers
Sensors, actuators market on 11% CAGR to 2018
Additional conference complements Sensor + Test trade fair
End of Windows XP boosted 1Q14 PC sales, says Gartner
April 15, 2014
The long-running decline of the desktop and notebook PC market, as consumers tend to buy and use lighter, more mobile, tablet ...
Global HB LED market set to shine by 2018
Chinese smartphone maker undercuts western companies
Materials interfaces pave way to solar cell gains
- USB 5V 2.5A Output, 42V Input Synchronous Buck with Cable Drop Compensation
- Measurement applications across multiple test platforms
- Supplying DC input power to string inverters
- Supplying DC input power for HEV testing
InterviewHeartbleed challenges the Internet of Thing
The Heartbleed security bug is a key example of the fundamental security challenge for the Internet of Things says Green Hills Software as it launches a new security group.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Arrow Electronics is giving away ten XMC1200 lighting application kits, worth 100 Euros each, for EETimes Europe's readers to win.
Each kit combines Infineon’s brightness and colour control XMC1200 CPU board to drive flicker free LED dimming and colour changing, together with a colour LED card and a white LED card.
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.