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If you wear eyeglasses or contact lenses, this might sound like a sci-fi dream come true: Researchers have designed a new spiral-shaped optical lens that can fix your sight. No matter the distance, or your prescription, everything in front of you will be totally in focus.
But this is no dream device. According to a research paper just published in the peer-reviewed scientific journal Optica, these lenses are very real. They are the invention of Laurent Galinier, an optometrist who developed an acuity measurement system that he sold to the international optical giant Essilor in 2000. Galinier got into a series of ventures after that and, while working on contact lenses for patients with corneal pathologies, his intuition made him stumble upon this extraordinary discovery.
“Remarkably, he observed that certain deformations brought about specific focusing characteristics,” Bertrand Simon, one of the paper’s coauthors, explains over email. “This led him to devise spiraling the diopter [the measurement that represents the optical strength of a lens] of the lenses to achieve multi-focusing.”
Translated: Galinier developed a spiraling contact lens that could replace progressive lenses.
How the spiral magic works
Simon explains that the spiral lenses are created by reshaping the surface of a polymer to generate optical vortices that have distinct focusing properties. Think about these vortices as water swirls that capture light rays and make them “spin.” As the rays spin through the spiral, they form different focal points where the light concentrates. These focal points have the ability to correct your vision problems making everything look in focus, even as the distance of what you’re looking at changes.
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[Photo: Laurent Galinier]
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