WEST LAFAYETTE — Research teams led by a faculty member in Purdue University’s College of Engineering will use two grants from the National Eye Institute totaling $6.7 million to develop further specialized smart soft contact lenses that continuously monitor or treat chronic ocular diseases like glaucoma corneal neovascularization and dry eye syndromes.
Chi Hwan Lee leads the teams developing the patent-pending lenses, which can painlessly deliver therapeutic drugs or accurately measure intraocular pressure (IOP), the only known modifiable risk factor for glaucoma.
Lee is the Leslie A. Geddes Associate Professor of Biomedical Engineering at Purdue’s Weldon School of Biomedical Engineering. He holds a joint appointment in the School of Mechanical Engineering and a courtesy appointment in the School of Materials Engineering.
Other researchers are Bryan Boudouris, Purdue’s associate vice president for research in strategic interdisciplinary research and the R. Norris and Eleanor Shreve Professor of Chemical Engineering in the Davidson School of Chemical Engineering; Shin Ae Park, assistant professor of ophthalmology in Purdue’s College of Veterinary Medicine; Pete Kollbaum, associate dean for research, director of the Borish Center for Ophthalmic Research and professor in Indiana University’s School of Optometry; and Dr. Yannis Paulus, associate professor of ophthalmology and visual sciences and biomedical engineering at Michigan Medicine.
Team members included Jinyuan Zhang, a former Purdue postdoctoral student in biomedical engineering and now a health technologies research and development engineer at Apple, and Yumin Dai, a graduate student in the School of Materials Engineering.
“Working on smart soft contact lenses allowed us to engage in top-tier interdisciplinary research, moving beyond theory to craft real-world solutions that aim to transform eye disease treatment,” Dai said. “We gained hands-on experience in biomedical engineering, materials science, and clinical application, equipping us for future healthcare challenges. This project highlights our dedication to merging education with groundbreaking research, ensuring we’re prepared to make a real impact.”
The National Eye Institute is one of the National Institutes of Health; the funding comes from the NIH Research Project Grant Program or R01.
The innovation
Lee specializes in StickTronics, which are sticker-like items that contain electronics or smart technology. He develops wearable biomedical devices that unobtrusively monitor and manage chronic diseases or health conditions.
Some traditional wearable tonometers — devices that measure pressure inside the eyes — are equipped with an integrated circuit chip. This increases contact lens thickness and stiffness compared with a typical commercial soft contact lens, often causing patient discomfort. The research team’s version is different.
“To address this unmet need, we developed a unique class of smart soft contact lenses built upon various commercial brands of soft contact lenses for continuous 24-hour IOP monitoring and potentially treatment, even during sleep at home,” Lee said.
“Our smart soft contact lenses retain the intrinsic lens features of lens power, biocompatibility, softness, transparency, wettability, oxygen transmissibility, and overnight wearability. Having all these features simultaneously is crucial to the success of translating them into ocular disease care, but current devices lack these features.”
The NEI grants
Lee said the $6.7 million funding from the two NEI grants will further refine the smart soft contact lenses. Concurrently, clinical trials will be conducted with Purdue’s College of Veterinary Medicine, the IU School of Optometry, and Michigan Medicine to assess the lenses’ biosafety, usability, functionality, therapeutic effectiveness, and durability.
“With the steadfast support from NEI, the successful completion of these projects will solidify our path toward introducing an innovative, closed-loop system for these smart contact lenses,” Lee said. “This system will enable simultaneous monitoring and drug delivery for a wide range of chronic ocular diseases.”
Lee disclosed the smart soft contact lenses innovation to the Purdue Innovates Office of Technology Commercialization, which has applied for a patent from the U.S. Patent and Trademark Office to protect intellectual property.
Information: Steve Martin, sgmartin@prf.org
Source: Chi Hwan Lee, lee2270@purdue.edu
