Researchers at the Nanyang Technological University (NTU) in Singapore have developed a groundbreaking battery that can power smart contact lenses and be charged with tears, according to a university press release. Contact lenses have come a long way in terms of technological advancements, with companies working on creating smarter versions that can connect to devices like smartphones and display information directly to the wearer’s eyes. However, these applications require the lenses to have an internal battery.

In the past, companies have managed to incorporate augmented reality displays into smart contact lenses using thin batteries with induction coils and metal wires. While this technology is impressive, it does pose risks for the user’s eyes. To address this issue, a research team led by Assistant Professor Lee Seok Woo from NTU’s School of Electrical and Electronic Engineering (EEE) has developed a battery that eliminates the use of metals.

The micrometer-thin battery is powered by saline solution, making it safe and comfortable for users. It can be charged with tears, which are readily available and abundant. This innovative solution not only eliminates the risks associated with metal-based batteries but also offers a more sustainable and convenient power source for smart contact lenses.

Professor Lee Seok Woo and his team’s breakthrough could pave the way for further advancements in wearable technology, particularly in the field of smart contact lenses. With this new battery technology, users can enjoy enhanced functionalities without compromising their eye health and safety.

The development of this lens battery showcases the continuous efforts of researchers to push the boundaries of innovation and create solutions that improve our daily lives. As technology continues to evolve, we can expect more exciting developments in the wearable tech industry, making our lives smarter and more connected than ever before.

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