Process for analyzing tear fluid

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving fixed or stabilized – nonliving microorganism,...

Reexamination Certificate

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C600S573000

Reexamination Certificate

active

10653866

ABSTRACT:
The present invention concerns a process for analyzing an analyte in a hydrogel contact lens following its wear on the eye, comprising the steps of(a) physically or chemically inducing a volume reduction of the hydrogel contact lens and thereby squeezing the analyte out of the polymer material making up the contact lens and(b) feeding the analyte obtained according to step (a) into an analyzer.The process of the invention provides a new concept for noninvasively measuring various analytes occurring in the tear fluid that is comfortable to the user.

REFERENCES:
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patent: 2004/0181172 (2004-09-01), Carney et al.
patent: 2007/0043283 (2007-02-01), Cohan et al.
patent: 32 18 999 (1983-12-01), None
patent: 0 641 806 (1998-01-01), None
patent: 0 932 635 (2001-07-01), None
Meakin et al. “Thermal analysis of poly(2-hydroxyethyl methacrylate)(pHEMA) hydrogels” J. Materials Sci: Material Med. (2003) 14: 9-15.
Wedler, C. “Analysis of biomaterials deposited on soft contact lenses” J. Biomed. Mater. Res. (1977) 11: 525-535.

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