Experimental treatments restore partial vision to blind people

Oct 20, 2009

Two experimental treatments, a retinal prosthesis and fetal tissue transplant, restored some vision to people with blinding eye diseases. The findings, presented at Neuroscience 2009, the annual meeting of the Society for Neuroscience and the world's largest source of emerging news on brain science and health, may lead to new treatments for the blind. Researchers also reported that an engineered protein restored vision in an animal model and identified ways to improve stem cell treatments.

The new studies tested both people and animals with two degenerative eye diseases: retinitis pigmentosa and age-related macular degeneration. These diseases destroy the light-sensitive in the retina, leading to blindness. In all, vision loss and eye disease affect 3.6 million Americans and cost the United States $68 billion each year.

Research released today shows that:

  • A retinal prosthesis restores partial vision to people who are totally blind. The prosthesis, made of an array of electrodes, transmits visual information captured by a video camera (Jessy Dorn, PhD, abstract 216.6).
  • Transplanted "sheets" of fetal improve in several people with retinitis pigmentosa and age-related macular degeneration (Robert B. Aramant, PhD, abstract 837.12).
  • Engineered, light-sensitive proteins restore vision in a mouse study of retinitis pigmentosa. The findings could lead to new treatments for people with degenerative retinal diseases (Natalia Caporale, PhD, abstract 806.10).
  • As researchers strive to develop stem cell therapies for eye disease, a new method increases the yield of retinal cells from human derived from both embryonic and adult tissue (Jason S. Meyer, PhD, abstract 113.1).
"Basic neuroscience research has formed the basis for significant progress in treating ," said press conference moderator Rachel O. L. Wong, PhD, of the University of Washington, an expert on visual system development. "These studies would not be possible without technological advances and basic science research that continues to explain the normal function and development of the visual system," Wong said.

Source: Society for Neuroscience (news : web)

Explore further: Vacuum treatment may limit damage after traumatic brain injury

add to favorites email to friend print save as pdf

Related Stories

Scientists successfully awaken sleeping stem cells

Mar 18, 2008

Scientists at Schepens Eye Research Institute have discovered what chemical in the eye triggers the dormant capacity of certain non-neuronal cells to transform into progenitor cells, a stem-like cell that can generate new ...

Recommended for you

How is depression related to dementia?

18 hours ago

A new study by neuropsychiatric researchers at Rush University Medical Center gives insight into the relationship between depression and dementia. The study is published in the July 30, 2014, online issue of Neurology, the me ...

Brainwaves can predict audience reaction

Jul 30, 2014

Media and marketing experts have long sought a reliable method of forecasting responses from the general population to future products and messages. According to a study conducted at The City College of New ...

User comments : 0