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US 2014/0194706 A1Published application
In-situ tear sample collection and testing using a contact lens
AssigneeGoogle Inc.
InventorsZenghe Liu, James Etzkorn
Life of this patent
Estimating the term…
Abstract
Apparatus, systems and methods employing contact lenses having one or more sensor that sense an analyte in tear fluid and one or more recesses that collect the tear fluid. In some aspects, a contact lens includes a substrate that forms at least part of a body of the contact lens and a recess formed within the substrate configured to collect tear fluid when the contact lens is worn. The contact lens further includes at least one sensor disposed within the substrate configured to sense presence of an analyte in the collected tear fluid.
Claims20
A contact lens, comprising:
- a substrate that forms at least part of a body of the contact lens, the contact lens having a concave surface and a convex surface opposite the concave surface, wherein the concave surface is configured to be removably mounted over a corneal surface of an eye;
- a recess formed within the substrate and having an opening in the convex surface of the contact lens, configured to collect tear fluid when the contact lens is worn;
- and
- at least one sensor disposed within the substrate configured to sense presence of an analyte in the collected tear fluid.
1 more element
A method comprising:
- collecting tear fluid in a cavity disposed within a body of a contact lens, the contact lens having a concave surface and a convex surface opposite the concave surface, wherein the concave surface is configured to be removably mounted over a corneal surface of an eye, and the cavity having an opening in the convex surface of the contact lens;
- and
- detecting presence of at least one analyte in the collected tear fluid via at least one sensor located within the body of the contact lens.
A contact lens, comprising:
- a tear fluid collection recess formed in a substrate that forms at least part of a body of the contact lens, the contact lens having a concave surface and a convex surface opposite the concave surface, wherein the concave surface is configured to be removably mounted over a corneal surface of an eye;
- the recess further having an opening in the convex surface of the contact lens and being configured to collect tear fluid when the contact lens is worn;
- at least one sensor configured to sense presence of one or more analytes in the tear fluid;
- a processor configured to determine a concentration of the one or more analytes;
- and
- a transmitter configured to transmit information relating to the concentration of the one or more analytes to an external device.
3 more elements
Dependencies are inferred from the claim text.