Patent ID: 11861823
Assignee: JOHNSON & JOHNSON VISION CARE, INC.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. A method for quantifying contact lens deposition using a microfluidic chip comprising a well in fluid communication with a fluid conduit, wherein the fluid conduit is in selective communication with a fluid inlet and a fluid outlet to control passage of fluid through the fluid conduit and into the well, the method comprising:
disposing a contact lens sample in the well of the microfluidic chip;
disposing a first volume of first fluid in the well with the contact lens sample;
capturing first images of the contact lens sample;
causing evaporation of at least a portion of the first volume of the first fluid;
disposing a second volume of second fluid in the well with the contact lens sample;
causing evaporation of at least a portion of the second volume of the second fluid;
disposing the microfluidic chip in a humidity chamber for a time period;
capturing second images of the contact lens sample after the time period has expired;
rinsing the contact lens sample with a third fluid;
capturing third images of the contact lens after the rinsing;
determining, using one or more of the first images, the second images, or the third images, a deposition metric; and
outputting the deposition metric.