Lensare - Glasses For Photosensitive Epileptics

What it does

Lensare glasses detect seizure and migraine-inducing light patterns using built-in sensors and instantly darken using LCD lenses. They aim to protect users with photosensitive epilepsy or photophobia by minimizing sudden, dangerous light exposure.

Your inspiration

The idea for Lensare began when I discovered LCD lenses—lenses capable of darkening near-instantly using little power. I was immediately fascinated and began thinking of other potential use cases. That led me to learn about the challenges faced by people with photosensitive epilepsy. I began researching the condition, discovering how certain light frequencies and rapid colour changes can trigger seizures or migraines. It became clear that this lens technology had the potential to offer real protection. That realization is what motivated me to develop smart glasses that could actively monitor light and respond fast enough to make a difference.

How it works

Lensare glasses continuously monitor the environment using both light and colour sensors. These feed real-time data into a microcontroller embedded in the arm of the frame, where it’s filtered to remove noise before being analysed by a custom flash-detection algorithm. This algorithm focuses on 3–30 Hz light frequencies, known to trigger seizures. Unlike general light filters, Lensare places special emphasis on detecting red light and sudden colour shifts, which are particularly hazardous for individuals with photosensitive epilepsy. When a potential threat is detected, the entire response—from detection to fully darkened lenses—takes less than 20 milliseconds, providing near-instant protection for the user’s vision.

Design process

Near the beginning of this project, I was able to consult with Dr. Hannah Jones, a paediatric neurologist, and Peter Bergin, Director of Auckland Hospital’s epilepsy surgery program. Their insights helped me to define a clear design brief focused on real-world needs. I began by sourcing compact, power-efficient components: a light sensor, colour sensor, microcontroller, and LCD lenses along with other components. Software development was the next major step. I tested various flash detection methods, including FFT-based approaches, but eventually developed a custom algorithm better suited to real-world environments. After functional testing, I focused on the physical design. I continuously iterated and 3D printed over 100 components to optimize comfort, durability, and fit—all while fitting electronics into a glasses frame. The first prototype was evaluated by my stakeholders which led to the integration of a colour sensor and updated algorithms. I later added an analogue control knob for user-configurable sensitivity and a preparation mode that detects initial light spikes preparing for more. Each iteration brought the design closer to a viable, user-focused product that balances technical performance with wearability.

How it is different

Most existing products for light sensitivity are passive filters, like blue light glasses, which can reduce overall light intensity but do not actively respond to light threats. Lensare is different. It uses real-time environmental sensing and algorithmic analysis to detect hazardous flashes and respond near instantly. Its dynamic LCD lenses block light almost entirely when a risk is detected— beyond what passive lenses can do. Unlike fixed-tint glasses, Lensare reacts only when needed, allowing users to maintain visual clarity the rest of the time. In the words of Dr. Hannah Jones, “I am not aware of any products which are similar to your design with the same technology.” This combination of active protection, red light sensitivity bias, and user control makes it unique and potentially life-changing.

Future plans

The current prototype shows the concept works, using low-cost consumer components and 3D printing for a build cost under $50. Future development would focus on custom electronics and potentially molded frames to improve comfort, aesthetics, and reliability. I’ve filed a provisional patent and am now seeking support from a patent attorney for full protection. My most important next step is clinical validation. I’m working with my medical contacts to begin structured trials, which will help confirm the effectiveness of the glasses and lay the foundation for future commercialization.

Awards

I received an Outstanding Technology Scholarship Award from NZQA and $500 for my work. I also won first place in Product Design at the Otago Polytechnic Celebrate Design Competition, where my glasses were recognized for both their technical innovation and real-world impact.