Title :
Measurement of Intraocular Pressure from the Extra-Ocular Space of the Eye using a MEMS Pressure Sensor
Author :
Turner, Matthew ; Naber, John ; Walsh, Kevin
Author_Institution :
Electr. & Comput. Eng., Univ. of Louisville, Louisville, KY
Abstract :
Intraocular pressure measurements are recorded in porcine eyes that have been surgically modified. The vitreous pressure is manipulated by an external connection to a fluidic reservoir and measured directly by a Millar mikro-tip catheter. Indirect vitreous pressure is measured with a Freescale medical grade pressure sensor at the choroid surface, within a scleral recess, and at the sclera surface. Results suggest improved strain transfer mechanisms may yield accurate indirect IOP monitoring at the sclera surface via a MEMS sensor.
Keywords :
eye; micromechanical devices; microsensors; pressure measurement; pressure sensors; MEMS pressure sensor; Millar mikro-tip catheter; choroid surface; extraocular space; fluidic reservoir; freescale medical grade pressure sensor; intraocular pressure measurement; microsensors; porcine eyes; sclera surface; scleral recess; strain transfer mechanisms; vitreous pressure; Capacitive sensors; Catheters; Current measurement; Eyes; Medical diagnostic imaging; Micromechanical devices; Minimally invasive surgery; Pressure control; Pressure measurement; Reservoirs;
Conference_Titel :
University/Government/Industry Micro/Nano Symposium, 2008. UGIM 2008. 17th Biennial
Conference_Location :
Louisville, KY
Print_ISBN :
978-1-4244-2484-9
Electronic_ISBN :
978-1-4244-2485-6
DOI :
10.1109/UGIM.2008.64
