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WGA Rescources

Abstract #95501 Published in IGR 22-2

A soft and transparent contact lens for the wireless quantitative monitoring of intraocular pressure

Park J; Park YG; Cha E; Ku M; An HS; Lee KP; Huh MI; Kim J; Kim TS; Kim DW; Kim HK; Park JU
Nature biomedical engineering 2021; 5: 772-782


Continuous detection of raised intraocular pressure (IOP) could benefit the monitoring of patients with glaucoma. Current contact lenses with embedded sensors for measuring IOP are rigid, bulky, partially block vision or are insufficiently sensitive. Here, we report the design and testing in volunteers of a soft and transparent contact lens for the quantitative monitoring of IOP in real time using a smartphone. The contact lens incorporates a strain sensor, a wireless antenna, capacitors, resistors, stretchable metal interconnects and an integrated circuit for wireless communication. In rabbits, the lens provided measurements that match those of a commercial tonometer. In ten human participants, the lens proved to be safe, and reliably provided accurate quantitative measurements of IOP without inducing inflammation.

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