Title :
A soft hydrogel contact lens with an encapsulated sensor for tear glucose monitoring
Author :
Yao, H. ; Marcheselli, C. ; Afanasiev, A. ; Lähdesmäki, I. ; Parviz, B.A.
Author_Institution :
Electr. Eng. Dept., Univ. of Washington, Seattle, WA, USA
fDate :
Jan. 29 2012-Feb. 2 2012
Abstract :
We report a hydrogel-based contact lens with an encapsulated glucose sensor. The sensor is fabricated on a flexible transparent parylene film. The parylene-based sensor is then encased inside a soft contact lens made of poly(hydroxyethyl methacrylate) (polyHEMA) hydrogel. We test the glucose sensor with different concentrations of glucose and interfering chemicals found in tear film, such as ascorbic acid. The rapid response, good linearity and repeatability demonstrate the basic functionality of this soft contact lens.
Keywords :
biomedical equipment; biosensors; chemical sensors; contact lenses; hydrogels; patient monitoring; polymer films; ascorbic acid; encapsulated glucose sensor; flexible transparent parylene film; parylene-based sensor; poly(hydroxyethyl methacrylate) hydrogel; soft hydrogel contact lens; tear film; tear glucose monitoring; Aluminum; Chemicals; Fluids; Lenses; Monitoring; Polymers; Sugar;
Conference_Titel :
Micro Electro Mechanical Systems (MEMS), 2012 IEEE 25th International Conference on
Conference_Location :
Paris
Print_ISBN :
978-1-4673-0324-8
DOI :
10.1109/MEMSYS.2012.6170299
