The Triggerfish lens is made of the same silicon hydrogel as many of the soft contact lenses currently on the market, but embedded within it is a microprocessor and a strain gauge that encircles its outer edge. When fluid accumulates in the eye, the diameter of the cornea changes, and that change is picked up by the strain gauge. Data is processed and then transmitted via radio frequency to a receiver.
This data can then be used by doctors to provide specific and timely treatments, as well as give researchers a continuous stream of data about the progress of the disease in the same patient.
Link via Popular Science | Photo: Sensimed | Previously on Neatorama: Contact Lenses that Change Color to Alert Diabetics of Glucose Levels