SCIENCE IN THE NEWS DAILY
Restoring Sight with Wireless Implants
From Nature News
The development of retinal implants has been dogged by problems of unwieldiness since the first implantable stimulator for vision restoration was developed in 1968. Sticking a mess of electronics, with wires, cables and inductive coils, into the human visual system was always going to be a tricky business.
James Loudin and his colleagues at Stanford University in California have developed a solution that overcomes many of these problems by the use of special glasses that fire infrared signals into the eye and onto an implanted array of silicon photodiodes. The system simplifies what needs to be implanted and both transmits visual data and power directly to the implants, eliminating the need for any bulky external power source. Their work is published today in Nature Photonics.
In order to explain how the set-up would work, Loudin regularly uses the Star Trek character Geordi LaForge as an analogy. "I'm not well versed in Star Trek any more, and I don't think Geordi had implants," he says. "However, like his visor, our patients cannot see without the goggles."
Connect With Us:
VIDEO: How Hair Ice Grows
In 2013, American Scientist featured an article on odd ice formations on plant stems, including these curling ribbons of ice. One of the types of ice discussed in the article was hair ice—long, thin strands of ice that grow under quite specific conditions. The only problem is that a new study shows the theory put forth at the time—that gas pressure pushes the water out—isn’t correct... (click the link above to read more).
To view all multimedia content, click "Latest Multimedia."
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.