Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

When seen through the lens of technology, few resources are truly scarce; they’re mainly inaccessible. 

 

Peter Diamandis

First nanoengineered retinal implant could help the blind regain functional vision

RATE THIS! +22
Posted in Medicine on 17th Mar, 2017 06:50 PM by Alex Muller

A team of engineers at the University of California San Diego and La Jolla-based startup Nanovision Biosciences Inc. have developed the first nanoengineered retinal prosthesis, a step closer to restoring the ability of neurons in the retina to respond to light.

 
The technology could help tens of millions of people worldwide suffering from neurodegenerative diseases that affect eyesight, including macular degeneration, retinitis pigmentosa, and loss of vision due to diabetes.
 
Despite advances in the development of retinal prostheses over the past two decades, the performance of devices currently on the market to help the blind regain functional vision is still severely limited, well under the acuity threshold of 20/200 that defines legal blindness.
 
The new prosthesis relies on two new technologies: implanted arrays of photosensitive nanowires and a wireless power/data system.
 
The new prosthesis uses arrays of nanowires that simultaneously sense light and electrically stimulate the retina. The nanowires provide higher resolution than anything achieved by other devices — closer to the dense spacing of photoreceptors in the human retina, according to the researchers.*
 
Existing retinal prostheses require a vision sensor (such as a camera) outside of the eye to capture a visual scene and then transform it into signals to sequentially stimulate retinal neurons (in a matrix). Instead, the silicon nanowires mimic the retina’s light-sensing cones and rods to directly stimulate retinal cells. The nanowires are bundled into a grid of electrodes, directly activated by light.
 
This direct, local translation of incident light into electrical stimulation makes for a much simpler — and scalable — architecture for a prosthesis, according to the researchers.

Tags: visioneyehealthmedicinehardware

Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Online on 2017-12-15 13:43:41
    The FCC votes to repeal the 2015 net neutrality rules..read more
    Posted in Science on 2017-12-15 13:34:37
    How Clinical Trials Are Making the Case for MDMA in.....read more
    Posted in Business on 2017-12-15 13:23:01
    Elon Musk: We Should Already Have a Lunar Base by Now..read more
    Posted in Business on 2017-12-14 01:48:06
    World Bank to stop financing oil, gas projects from 2019..read more
    Posted in Medicine on 2017-12-13 21:23:13
    Marijuana May Help HIV Patients Keep Mental Stamina Longer..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Martian landscapes formed from sand 'levitating' on a little.....read more
    Posted by AlexMuller
    Scientists detect comets outside our solar system..read more
    Posted by AlexMuller
    Advanced artificial limbs mapped in the brain..read more
    Posted by AlexMuller
    Bacteria have a sense of touch..read more
    Posted by AlexMuller
    Recurrent brain cancer: New hope with phase 1 clinical trial.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me