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

Joohee Kim, Jihun Park, Young Geun Park, Eunkyung Cha, Minjae Ku, Hyeon Seok An, Kyoung Pil Lee, Man Il Huh, Junmo Kim, Taek Soo Kim, Dai Woo Kim, Hong Kyun Kim, Jang Ung Park

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)772-782
Number of pages11
JournalNature biomedical engineering
Issue number7
Publication statusPublished - 2021 Jul

Bibliographical note

Funding Information:
This work was supported by the Ministry of Science & ICT (MSIT) and the Ministry of Trade, Industry and Energy (MOTIE) of Korea through the National Research Foundation (2019R1A2B5B03069358 and 2016R1A5A1009926), the Bio & Medical Technology Development Program (2018M3A9F1021649), the Nano Material Technology Development Program (2016M3A7B4910635) and the Technology Innovation Program (20010366 and 20013621, Center for Super Critical Material Industrial Technology). We also acknowledge financial support from the Institute for Basic Science (IBS-R026-D1), the Research Program (2019-22-0228) and the Post Doc Researcher Supporting program of 2019 (2019-12-0010) funded by Yonsei University.

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Medicine (miscellaneous)
  • Biomedical Engineering
  • Computer Science Applications


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