Are Contact Lenses the Ultimate Computer Screen?

Imagine you have to make a speech, but instead of looking down at your notes, the words scroll in front of your eyes, whichever direction you look in. That’s just one of many features the makers of smart contact lenses promise will be available in the future.

Imagine… you’re a musician with your lyrics, or your chords, in front of your eyes. Or you’re an athlete and you have your biometrics and your distance and other information that you need,” says Steve Sinclair, from Mojo, which is developing smart contact lenses.
His company is about to embark on comprehensive testing of smart contact lens on humans, that will give the wearer a heads-up display that appears to float in front of their eyes.

The product’s scleral lens (a larger lens that extends to the whites of the eye) corrects the user’s vision, but also incorporates a tiny microLED display, smart sensors and solid-state batteries. “We’ve built what we call a feature-complete prototype that actually works and can be worn – we’re soon going to be testing that [out] internally,” says Mr Sinclair. “Now comes the interesting part, where we start to make optimisations for performance and power, and wear it for longer periods of time to prove that we can wear it all day.”

Other smart lenses are being developed to collect health data. Lenses could “include the ability to self-monitor and track intra-ocular pressure, or glucose,” says Rebecca Rojas, instructor of optometric science at Columbia University. Glucose levels for example, need to be closely monitored by people with diabetes. “They can also provide extended-release drug-delivery options, which is beneficial in diagnosis and treatment plans. It’s exciting to see how far technology has come, and the potential it offers to improve patients’ lives.

Research is underway to build lenses that can diagnose and treat medical conditions from eye conditions, to diabetes, or even cancer by tracking certain biomarkers such as light levels, cancer-related molecules or the amount of glucose in tears. A team at the University of Surrey, for example, has created a smart contact lens that contains a photo-detector for receiving optical information, a temperature sensor for diagnosing potential corneal disease and a glucose sensor monitoring the glucose levels in tear fluid.

Source: https://www.bbc.com/

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