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
- Starscope monocular review; why is starscope monocular trending?on January 25, 2021 at 5:21 am
This press releas talks about starscope monocular review I grew up knowing my dad was a professional photographer who loved documenting adventures and beautiful creatures of nature He lured me to be a ...
- Types of telescope: Refractor, reflector, Newtonian or Dobsonian?on January 25, 2021 at 4:11 am
So you're hunting for the best telescope for stargazing – a hobby you can enjoy without having to leave home – but are confused about the various jargon and different types of telescope available to ...
- Huawei: what the Mate 40 Pro teaches us about the future of camera phoneson January 23, 2021 at 3:43 am
Huawei: what the Mate 40 Pro teaches us about the future of camera phones. The Samsung Galaxy S21 Ultra may have shot through the doors ...
- Lenses 101: Ask David Bergmanon January 21, 2021 at 11:54 pm
Lenses look complicated and can be intimidating. They are all different sizes and some have various modes and functions. How do I pick the right lens?” Go to to submit your own photo question, see ...
- Fujifilm Debuts Two 8K Broadcast Zoom Lenseson January 21, 2021 at 10:04 am
Fujifilm has announced that it will release two new broadcast zoom lenses, the Fujinon HP66x15.2-ESM (HP66x15.2) and the Fujinon HP12x7.6ERD-S9 (HP12x7.6), which each feature optical technology to ...
- Starscope Monocular Review: Is this 47$ Telescope Worth the Hype? – By Harry Johnsonon January 21, 2021 at 7:56 am
Brand Partner Content by KISS PR Brand Story* Is the Starscope monocular telescope really worth the hype? Does it work up to the expectations? Is it worth my money? All these questions will be ...
- Machine Learning Finds More Gravitational Lenses Than All Astronomers Combinedon January 17, 2021 at 11:00 pm
The lensing effect stretches, distorts, and magnifies the background galaxy, as well as creating multiple images of it. One of Einstein’s most revolutionary predictions is that mass bends light.
- Galaxy S21 Ultra Packs Two Telephoto Lenses and Supports the S Penon January 17, 2021 at 2:44 am
Samsung has just revealed its latest yet upcoming flagship phones, Galaxy S21 Ultra, S21 and S21+. Just like in the previous year, Ultra model is the highest spec version, which packs features like a ...
- Vespera, a smart telescope to make astrophotography easier, nabs CES 2021 Innovation Awardon January 16, 2021 at 11:27 am
A new smart telescope from Vaonis is about to make astrophotography ... Both Vespera and Stellina use refractor lenses, but Vespera has a smaller aperture of 2 inches (50 mm) and focal ratio of f/4, ...
- Samsung Galaxy S21 Ultra announced with S Pen support, dual telephoto lenseson January 14, 2021 at 7:07 am
The first camera upgrade you’ll notice is that there are two telephoto lenses now. The periscope was extended to 10x optical magnification and a traditional 3x lens was added to fill in the mid-range ...
The Latest Google Headlines on:
Telescopic Contact Lens
The Latest Bing News on:
- Best waterproof keyboardon January 25, 2021 at 1:39 pm
No more worrying about spills or water damage. The post Best waterproof keyboard appeared first on Dot Esports.
- Cyber Shadow Reviewon January 25, 2021 at 6:00 am
A glorious love letter to retro ninja action, Cyber Shadow is a must for fans of high-speed fun and delicious 1990s cheesy camp.
- Cyber Shadow Review: 8-Bit Blisson January 25, 2021 at 5:00 am
The video game industry may have largely moved away from 8-bit graphics and simpler control schemes, but that hasn't stopped a number of indie developers from providing players with new experiences ...
- Switzerland's Timeless Art Mechanics Embraces 3D Futureon January 24, 2021 at 2:47 am
In his snow-bound workshop, Swiss master Francois Junod's moving mechanical artworks whir into action: birds whistle, historical luminaries write poetry -- traditional craftsmanship newly recognised ...
- A mini satellite from Lafayette circles Earth every 90 minutes; here's how it helps astronautson January 23, 2021 at 2:49 pm
A cubical satellite small enough to sit on the palm of your hand is zipping around the world and sending data about radiation to the Lafayette students who designed and ...
- STOGA Mechanical Gaming Keyboard vs Razer Blackwidow V3 Pro: which is the best gaming keyboard for you?on January 20, 2021 at 7:42 am
Our STOGA Mechanical Gaming Keyboard vs Razer Blackwidow V3 Pro guide looks at two great mechanical gaming keyboards with very different approaches ...
- Students develop eye-track testing rigon January 13, 2021 at 6:00 am
A team of WSU students developed a testing robot as part of their senior design project to help match eye‑tracking technology with people in need.
- Mechanical fitter, 56, resorts to standing on Gisborne street with a sign in a bid to find workon January 11, 2021 at 8:28 pm
Kim Holloway, 56, has spent most of his working life as a mechanical fitter, but has struggled to find employment after recently returning to his New Zealand hometown Gisborne.
- AVENGERS 5 Will Happen "At Some Point" Confirms Marvel Studios President Kevin Feigeon January 10, 2021 at 4:00 pm
Feeling sorry for his multiple losses, Rocket gives his new friend a mechanical eye that he stole during one of his many double-crosses. Thor looked pretty awesome with the patch, so this seems ...
- Eye Nuts Informationon February 8, 2018 at 3:03 pm
Eye nuts (eyenuts) are fasteners with a looped head. They are designed to receive a hook or rope. Eye nuts are rated for different types of applications and are oval or round in shape. Load-rated eye ...