US 12,245,816 B2
Intraocular pressure monitoring contact lens
Angelica Campigotto, Kingston (CA); Yong Jun Lai, Kingston (CA); Robert J. Campbell, Kingston (CA); and Stephane Leahy, Nepean (CA)
Assigned to Queen's University at Kingston, Kingston (CA); and Kingston Health Sciences Centre, Kingston (CA)
Appl. No. 17/614,157
Filed by Queen's University at Kingston, Kingston (CA); and Kingston Health Sciences Centre, Kingston (CA)
PCT Filed May 29, 2020, PCT No. PCT/CA2020/050734
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2020/237385, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/855,132, filed on May 31, 2019.
Prior Publication US 2022/0218202 A1, Jul. 14, 2022
Int. Cl. A61B 3/16 (2006.01); A61B 5/00 (2006.01); G02C 7/04 (2006.01); G16H 50/30 (2018.01)
CPC A61B 3/16 (2013.01) [A61B 5/6821 (2013.01); G02C 7/04 (2013.01); G16H 50/30 (2018.01); G02C 2202/06 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A device for monitoring intraocular pressure (IOP) of an eye of a subject, comprising:
a flexible lens that is adapted to fit on the eye and to change curvature in response to a change in curvature of the eye;
a microchannel disposed in or on the lens, the microchannel having one or more ends, wherein at least one end is open to a surrounding environment of the lens;
an indicator solution disposed in a portion of the microchannel;
wherein the microchannel exhibits a change in volume in response to a change in curvature of the lens;
wherein the change in volume of the microchannel results in a change in position of the indicator solution in the microchannel;
wherein the change in position of the indicator solution in the microchannel is indicative of a change in IOP.