Navigation Links
Prosthetic retina offers simple solution to restoring sight
Date:5/17/2012

A device which could restore sight to patients with one of the most common causes of blindness in the developed world is being developed in an international partnership.

Researchers from the University of Strathclyde and Stanford University in California are creating a prosthetic retina for patients of age related macular degeneration (AMD), which affects one in 500 patients aged between 55 and 64 and one in eight aged over 85.

The device would be simpler in design and operation than existing models. It acts by electrically stimulating neurons in the retina, which are left relatively unscathed by the effects of AMD while other 'image capturing' cells, known as photoreceptors, are lost.

It would use video goggles to deliver energy and images directly to the eye and be operated remotely via pulsed near infra-red light- unlike most prosthetic retinas, which are powered through coils that require complex surgery to be implanted.

The prosthetic retina is a thin silicon device that converts pulsed near infra-red light to electrical current that stimulates the retina and elicits visual perception. It requires no wires and would make surgical implantation simpler. The device has been shown to produce encouraging responses in initial lab tests and is reported in an article published in Nature Photonics. The technology is now being developed further.

Dr Keith Mathieson, now a Reader in the Institute of Photonics at the University of Strathclyde in Glasgow, was one of the lead researchers and first author of the paper. He said: "AMD is a huge medical challenge and, with an aging population, is continuing to grow. This means that innovative, practical solutions are essential if sight is to be restored to people around the world with the condition.

"The prosthetic retina we are developing has been partly inspired by cochlear implants for the ear but with a camera instead of a microphone and, where many cochlear implants have a few channels, we are designing the retina to deal with millions of light sensitive nerve cells and sensory outputs.

"The implant is thin and wireless and so is easier to implant. Since it receives information on the visual scene through an infra-red beam projected through the eye, the device can take advantage of natural eye movements that play a crucial role in visual processing."

The research was co-authored by Dr. Jim Loudin of Stanford and led by Professor Daniel Palanker, also of Stanford, and Professor Alexander Sher, of the University of California, Santa Cruz.

Professor Palanker said: "The current implants are very bulky, and the surgery to place the intraocular wiring for receiving, processing and power is difficult. With our device, the surgeon needs only to create a small pocket beneath the retina and then slip the photovoltaic cells inside it."

Dr Mathieson was supported through a fellowship from SU2P, a venture between academic institutions in Scotland and California aimed at extracting economic impact from their joint research portfolio in photonics and related technologies.

Strathclyde leads the collaboration, which also includes Stanford, the Universities of St Andrews, Heriot-Watt and Glasgow and the California Institute of Technology. SU2P was established through funding from Research Councils UK- as part of its Science Bridges awards- the Scottish Funding Council and Scottish Enterprise.

The research links to Photonics and Health Technologies at Strathclyde- two of the principal themes of the University's Technology and Innovation Centre (TIC), a world-leading research and technology centre transforming the way universities, business, and industry collaborate.

Through Health Technologies at Strathclyde, academics work with industry and the health sector to find technologies for earlier, more accurate disease detection and better treatments, as well as life-long disease prevention.


'/>"/>

Contact: Paul Gallagher
paul.gallagher@strath.ac.uk
44-141-548-2370
University of Strathclyde
Source:Eurekalert

Related medicine news :

1. Neuroprosthetics symposium to be webcast live from Worcester Polytechnic Institute Nov. 3
2. University of Louisville surgeons perform first prosthetic bypass graft with patients stem cells at point-of-care
3. Researchers aim for direct brain control of prosthetic arms
4. A new definition for periprosthetic joint infection
5. Rothman at Jefferson research suggests abandon convention in diagnosing periprosthetic joint infection
6. AMD risk on the rise for Asians; retinal vein bypass may help many CRVO patients
7. Hallmark Alzheimers disease changes found in retinas of humans and imaged in live animals
8. UCSD receives NIH Transformative R01 Award for stimulation of neuron regeneration in the retina
9. Treatment of retinal conditions appears to have changed significantly in previous decade
10. Case Western Reserve receives $10M to study retinal disease, develop new treatments
11. Emory Eye Center to host 25th Southeastern Vitreoretinal Seminar (SEVR)
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/18/2017)... , ... January 18, 2017 , ... ... asset protection and financial planning services to families and business owners in the ... aimed at supporting children with developmental disabilities. , The Lakemary Center is a ...
(Date:1/18/2017)... ... January 18, 2017 , ... Catalent ... for drugs, biologics and consumer health products, today announced that Mr. Michael Merges, ... upcoming WCBP Conference, to be held at the Mayflower Hotel, Washington DC, on ...
(Date:1/18/2017)... , ... January 18, 2017 , ... ... the revolutionary Active Brake Technology (ABT), an innovative braking system that allows skaters ... Brake Technology addresses one of the biggest concerns of beginner and intermediate skaters ...
(Date:1/17/2017)... Michigan (PRWEB) , ... January 17, 2017 , ... January is National Stalking Awareness ... who choose to lurk in the corners and commit the crime of stalking, a very ... use and addiction, an often overlooked factor in stalking and other crimes. , “Stalking: know ...
(Date:1/17/2017)... , ... January 17, 2017 , ... ... point of difference. Eden Activewear is a stand-out company for several differences from ... online and only manufacture on demand, this is called 'Agile' manufacturing - ...
Breaking Medicine News(10 mins):
(Date:1/18/2017)... , Jan. 18, 2017  Dermata Therapeutics, LLC, ... to treat a variety of dermatological diseases, announces ... DMT210, in a Phase 2 acne rosacea study. ... downregulate the proinflammatory cytokines in the skin responsible ... rosacea. This clinical trial, DMT210-003, ...
(Date:1/18/2017)... Safe Rx LLC and Good Day Pharmacy, ... Loveland, Colorado , today announced the availability ... Day locations.     "Patients with prescriptions prone ... storage," said Milton Cohen , President & CEO ... a cup of coffee, you can protect your children ...
(Date:1/18/2017)... In China , we say Health is ... China,s Healthy Strategy originates. 2016 is ... and Social Development of the People,s Republic of ... council of the People,s Republic of China ... plan, identifying medical devices as one of the main breakthrough ...
Breaking Medicine Technology: