Eye Augmentation in the Future
Image: Raygun Studio
Babak A. Parviz, a bionanotechnologist at the University of Washington, writes that in the future, biotech innovations could lead to display screens inside contact lenses:
These visions (if I may) might seem far-fetched, but a contact lens with simple built-in electronics is already within reach; in fact, my students and I are already producing such devices in small numbers in my laboratory at the University of Washington, in Seattle [see sidebar, "A Twinkle in the Eye"]. These lenses don’t give us the vision of an eagle or the benefit of running subtitles on our surroundings yet. But we have built a lens with one LED, which we’ve powered wirelessly with RF. What we’ve done so far barely hints at what will soon be possible with this technology.
Conventional contact lenses are polymers formed in specific shapes to correct faulty vision. To turn such a lens into a functional system, we integrate control circuits, communication circuits, and miniature antennas into the lens using custom-built optoelectronic components. Those components will eventually include hundreds of LEDs, which will form images in front of the eye, such as words, charts, and photographs. Much of the hardware is semitransparent so that wearers can navigate their surroundings without crashing into them or becoming disoriented. In all likelihood, a separate, portable device will relay displayable information to the lens’s control circuit, which will operate the optoelectronics in the lens.
Link via CrunchGear
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Contact Lens Enables Transplant
A new procedure to help people with damaged corneas is showing promise in three patients so far. A team from the University of New South Wales in Sydney takes stem cells from the patient’s good eye and cultures them in a contact lens. When the cells have multiplied, they place the lens over the patient’s affected eye and leave it for around three weeks. During that time, the cells begin to grow into the damaged cornea and help regenerate it. In effect, it’s a stem cell transplant from one eye to the other.
Researcher Dr Nick Di Girolamo said: ‘The procedure is totally simple and cheap.
‘Unlike other techniques, it requires no foreign human or animal products, only the patient’s own serum, and is completely non-invasive.
‘There’s no suturing, there is no major operation. You don’t need any fancy equipment.’
The contact lenses used in the operation are already widely used after eye surgery.
The researchers hope the technique can be adapted for other parts of the eye, such as the retina, and even elsewhere in the body.
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The Cat Who Wears Contacts
Ernest is a 15-year-old cat who lives at a shelter in Godshill on the Isle of Wight. He suffers from entropion, a condition where the eyelids roll inward and cause inflammation. Surgery might correct the condition, but veterinarians were concerned about how such an old cat would react to an anesthetic. The solution? Contact lenses!
Centre manager Paula Sadler, 56, said: ‘Before Earnest was given the contact lenses he was quite squinty and had trouble seeing where he was going.
‘Now his eyes have opened up and he has a new lease of life.
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