Physics

Prototype lens can block wavelengths that cause epileptic seizures

Graphical summary. Credit: Cell Reports Physical Science (2024). DOI: 10.1016/j.xcrp.2024.102158

People with photosensitive epilepsy could benefit from prototype glasses with lenses that block wavelengths known to cause seizures in some people.

In a study published in Cell Reports Physical Science, researchers from the University of Glasgow and the University of Birmingham have developed a prototype liquid crystal lens that they believe could help patients with photosensitive epilepsy.

The lenses are controlled by very small temperature changes built into the lenses and, when activated, emit light in the 660-720nm wavelength range, which is known to affect most people suffering from photosensitive epilepsy.98 % or more can be blocked.

Zubair Ahmed, professor of neuroscience at the University of Birmingham and co-author of the study, said: “This is a very exciting project, and when we first started working on it four years ago it felt like a science fiction project. This paper explores the use of liquid crystal lenses that can be tuned to cut out specific wavelengths of light.

“The prototype shows how a discrete circuit attached to the frame of the glasses powers these lenses, allowing certain wavelengths of light to trigger seizures, such as when watching TV or playing computer games. The circuit heats the lenses to a temperature that is comfortable for the wearer and blocks more than 98% of the wavelengths of light that can cause seizures.

Researchers develop lens that can block wavelengths that cause epileptic seizures

Schematic diagram of a thermally controlled CLC lens that can reflect light at specific wavelengths. Credit: Cell Reports Physical Science (2024). DOI: 10.1016/j.xcrp.2024.102158

Rami Ghannam, Professor of Electrical Engineering at the University of Glasgow and lead author of the study, said: “This project is an example of collaboration between different disciplines such as engineering, neuroscience and mathematics affected by various diseases. “It shows how this can lead to discoveries that have the potential to change the lives of patients.” disease. ”

“We are currently developing this prototype further to improve its performance before introducing it into human research.”

The authors note that while the current prototype worked in rooms with temperatures up to 26 degrees Celsius, the technology needs further fine-tuning to accommodate use in hotter environments. The researchers also note that the time it takes for the prototype to heat up and cool down could be improved.

Further information: Yuanjie Xia et al, Thermally controlled cholesteric liquid crystal wavelength filter lens for photosensitive epilepsy treatment, Cell Reports Physical Science (2024). DOI: 10.1016/j.xcrp.2024.102158

Provided by University of Glasgow

Source: Prototype lenses can block wavelengths that cause epileptic seizures (November 22, 2024) from https://phys.org/news/2024-11-prototype-lenses-block-epiletic-seizure.html 2024 Retrieved on November 24th

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