Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, Korea.
PHI BIOMED Co., 168 Yeoksam-ro, Gangnam-gu, Seoul 06248, South Korea.
ACS Appl Bio Mater. 2021 May 17;4(5):4532-4541. doi: 10.1021/acsabm.1c00267. Epub 2021 Apr 30.
Continuous intraocular pressure (IOP) monitoring can provide a paradigm shift in the management of patients with glaucoma as a facile alternative to conventional diagnostic methods. However, the low sensitivity and functional instability of current IOP sensors have limited their clinical utility in the management of glaucoma. Here, we have developed a smart contact lens integrated with a transparent silver nanowire IOP strain sensor and wireless circuits for noninvasive, continuous IOP monitoring. After confirming the robust stability of the IOP sensor within the smart contact lens in the presence of tears and repeated eyelid blink model cycles, we were able to monitor IOP changes on polydimethylsiloxane model eyes . tests demonstrated that our fully integrated wireless smart contact lens could successfully monitor the change in IOP in living rabbit eyes, which was clearly validated by the conventional invasive tonometer IOP test. Taken together, we could confirm the feasibility of our smart contact lens as a noninvasive platform for continuous IOP monitoring of glaucoma patients.
持续眼压(IOP)监测可以为青光眼患者的管理提供一种范式转变,作为传统诊断方法的简便替代方法。然而,目前的 IOP 传感器灵敏度低且功能不稳定,限制了它们在青光眼管理中的临床应用。在这里,我们开发了一种智能隐形眼镜,该隐形眼镜集成了透明银纳米线 IOP 应变传感器和无线电路,用于非侵入性、连续的 IOP 监测。在确认了智能隐形眼镜内的 IOP 传感器在存在眼泪和反复眼睑眨眼模型循环的情况下具有强大的稳定性后,我们能够在聚二甲基硅氧烷模型眼睛上监测 IOP 变化。测试表明,我们的完全集成无线智能隐形眼镜可以成功监测活兔眼中的 IOP 变化,这与传统的侵入性眼压计 IOP 测试得到了明确验证。综上所述,我们可以确认我们的智能隐形眼镜作为一种非侵入性平台用于青光眼患者连续 IOP 监测的可行性。