A team of engineers has designed a telescopic contact lens that can switch between normal and magnified vision by using slightly modified off-the-shelf 3D television glasses.
The researchers, led by Joseph Ford, a professor of electrical engineering at the University of California, San Diego, built a prototype of the lens and tested it on a mechanical eye. Researchers report their findings in the June 27 online issue of Optics Express, an open-access journal of the Optical Society.
The new lens could ultimately be used to improve vision for patients suffering from eye disease, including age-related macular degeneration, or AMD, a condition that causes loss of vision in the center of the visual field. Patients typically cannot read or recognize faces.
Ongoing research on the lenses is funded through a larger research program. Last summer, UC San Diego researchers worked with partners at Innovega and Paragon Vision Sciences to conduct human clinical trials on a preliminary version of the wearable lens. A second round of clinical trials will occur later this year.
Said Ford, the principal investigator on the project, “While there is a great deal of work still ahead, we see a clear path to a comfortable low-vision aid powered by a contact lens, which will help a significant number people who have impaired vision.”
The contact lens developed by Ford’s team is one millimeter thick. Researchers used aluminum mirrors, fit tightly together, to create a ring-shaped telescope embedded in the contact lens. The center of the lens allows for normal, non-magnified vision. Its periphery, where the telescope is located, magnifies images 2.8 times.
The telescopic contact lens, once fine-tuned, will be less invasive than the miniature telescopes that can currently be implanted into patients’ eyes. In addition, the lens the researchers developed does a better job at collecting light. The lens is also less bulky than telescopes mounted on glasses that are currently available to help patients with impaired vision. The contact lens’ optics make it possible to switch between normal and magnified vision by combining the contact lenses with glasses such as the “active shutter” glasses worn to watch some 3D televisions.
Switching between normal and magnified vision
Without the glasses, the contact lenses superimpose both normal and magnified images. With the glasses on, a liquid crystal shutter will switch open a window for normal or telescopic vision? Researchers are working on a hands-free switch that uses a low-power infrared LED to monitor when the user blinks with both eyes or winks with one eye to activate one of the two functions.
The lenses of the 3D glasses contain liquid crystals, which switch the two sections of the telescopic contact lens on and off. The crystals change the way light is refracted onto polarized films embedded in the contact lens, so that only light with a certain orientation, or polarization, passes through the glasses to the contact lens, hitting either the telescopic portion of the lens, or the area designed for normal vision.
Testing the lens
The researchers tested the lens on a life-size mechanical model of the eye that they built. The model was connected to a complex imaging system that allowed engineers to see on a computer screen what their mechanical eye saw. They also ran complex computer models to simulate the lens’ performance.
Tests performed with the mechanical eye showed that the lens’ magnified image provides a much larger field of vision than other magnification approaches currently in use. The quality of the images was also good.
The Latest Bing News on:
Telescopic Contact Lens
- Panasonic 70-200mm f/2.8 S PRO Field Test: A versatile, rugged and sharp telephoto zoom lenson November 25, 2020 at 7:24 am
IR reviewer and photographer, Jeremy Gray, was finally able to get some hands-on time with the high-performance Panasonic 70-200mm f/2.8 L-mount lens, and we've just published his in-depth Field Test.
- Black Friday Canon Lens Deals 2020: Canon Telephoto, Macro & More Camera Lens Deals Reported by Saver Trendson November 24, 2020 at 11:23 pm
Canon lens deals for 2020 are live, review the top Black Friday Canon EF, EF-S and RF lens mount sales here on this pageHere’s a ...
- Nikon Just Teased Its Roadmap of Mirrorless Lenseson November 23, 2020 at 4:29 pm
Nikon fans, take note: the Japanese manufacturer has just released a teaser of all of the glass that Nikon mirrorless users can expect to see in the near future, bringing the total number of lenses to ...
- Telescope & Binoculars Black Friday Deals (2020): Best Orion, Nikon & Bushnell Telescope & Binoculars Savings Published by The Consumer Poston November 23, 2020 at 2:20 pm
Black Friday binoculars and telescope deals for 2020 have arrived, review all the best Black Friday Nikon, Orion, and Bushnell discounts listed below ...
- Mike Lynch’s Skywatch: Want to get into stargazing? Here’s my holiday telescope buying guide.on November 22, 2020 at 3:00 am
If you have a stargazing fan on your holiday gift-giving list and you’re considering a telescope for that special someone, even if that someone is you, I want you to buy right and buy smart.
- A Supremely Affordable Telephoto Zoom: A Review of the Tamron 70-300mm f/4.5-6.3on November 20, 2020 at 3:51 pm
Di III RXD for Sony mirrorless cameras. At just $549, it’s less than half the price of the Sony equivalent, but how well does it perform? Saving more than 50% of the price of the Sony FE 70-300mm f/4.
- Nikon teases upcoming super telephoto lenses, 50mm prime with an updated lens road mapon November 20, 2020 at 9:22 am
Nikon has released an updated version of its visual lens roadmap, showing off three new silhouettes for its forthcoming 'Micro 50mm' prime, 400mm S-Line super-telephoto and 600mm S-Line ...
- Nikon Promises Two Super-Telephoto Primes Coming to Z-Mount by 2022on November 20, 2020 at 8:32 am
Nikon recently published an updated lens roadmap that shows a total of eleven silhouetted, to-be-released lenses, but this latest version includes three ...
- Imaging Resource Camera of the Year 2020: Best Prime and Zoom Lenseson November 19, 2020 at 8:15 pm
Today we present to you six wonderful lenses released in 2020 - four zooms and two coveted primes - all of which deserve attention for a potential spot in your bag! Cameras can come and go but lenses ...
- Canon Lens Black Friday Deals (2020): Early Zoom, Macro, Telephoto & More Canon Lens Sales Compared by Retail Fuseon November 17, 2020 at 10:54 am
Canon lens deals are live, explore the latest early Black Friday Canon EF-S and RF camera lens discounts on this page. Early Black Friday Canon lens deals have ...
The Latest Google Headlines on:
Telescopic Contact Lens
The Latest Bing News on:
- Henderson’s Collin Royster joins ‘BattleBots’ team on TVon November 28, 2020 at 4:54 am
When a young Collin Royster first tuned into “BattleBots” two decades ago, he couldn't have known he would himself appear on the show years later.
- Robots for kids: STEM kits and more tech gifts for hackers of all ageson November 28, 2020 at 1:14 am
If you want to spark the imagination of your kids while at the same time giving them a leg up with some of the tech skills they'll need as adults, you can't go wrong by looking at these products as ...
- The Best Black Friday Deals Under $50on November 27, 2020 at 3:14 pm
You don't need to drop a boatload of money just because it's the biggest shopping day of the year. These picks won't empty your wallet.
- Purpose, Goals and Measures of Successon November 27, 2020 at 10:25 am
We're in the process of mid-year performance reviews here at the Equality Fund. I want to use this as an opportunity to write about purpose, measuring success and applying Goodhart's Law to ...
- Tested: 1988 Buick Reattaon November 27, 2020 at 10:00 am
From the February 1988 issue of Car and Driver. Jay Qualman is a rare bird in the Detroit jungle: a purebred car cuckoo who nests in the high branches of the automobile business. Qualman's business ...
- Best gaming accessories deals on Black Friday: Xbox controllers, gaming mice and moreon November 27, 2020 at 9:34 am
All of these are available now, but we'll be keeping an eye out for more as the discount season progresses ... offerings into a single package -- the Arctis 1 headset, Apex 3 mechanical keyboard and ...
- ‘Star Wars’: Darth Vader Had 6 Different Helmets for ‘Episode V: The Empire Strikes Back’on November 26, 2020 at 9:57 am
In fact, Darth Vader’s helmet alone was designed with six distinct looks before The Empire Strikes Back was filmed. RELATED: ‘Rogue One’: How the ‘Star Wars’ Film Finally Showed Fans Darth Vader’s ...
- Gwen Rockwood: The adventures of dizzy Dustin leave robot's mom hoveringon November 25, 2020 at 11:22 pm
I bought a robotic vacuum cleaner. Like millions of other people, I fell in love with the idea of pushing a button and having a robot roam around the house cleaning the floors while I did something ...
- 29 Early Black Friday Deals You’ll Want to Snag Nowon November 24, 2020 at 9:35 am
The WIRED Gear team shares deals all year long. The discounts listed below appear to be at or below their upcoming, advertised Black Friday prices. You shouldn't buy anything that isn't on your ...
- Fiery ideason October 16, 2020 at 12:31 pm
The fossil-like forms Desai displayed at Art Exposure’s online exhibition of his works titled, A Mechanical Eye (September 11-October 30), were created with found paper, watercolours and graphite.