Featured Research

from universities, journals, and other organizations

New approach to remedying childhood visual disorders

Date:
August 26, 2013
Source:
University of California - Irvine
Summary:
By discovering the role of key neurons that mediate an important part of vision development, neurobiologists have revealed a new approach to correcting visual disorders in children who suffer from early cataracts or amblyopia, also known as lazy eye.

By discovering the role of key neurons that mediate an important part of vision development, UC Irvine and UCLA neurobiologists have revealed a new approach to correcting visual disorders in children who suffer from early cataracts or amblyopia, also known as lazy eye.

Such youngsters can have permanent defects in vision, even after surgery to remove cataracts or correct lazy eye. These flaws are often a result of improper brain development due to visual deprivation during childhood. In contrast, when cataracts in adults are surgically corrected, normal vision is usually restored.

Xiangmin Xu, assistant professor of anatomy & neurobiology at UC Irvine, and Josh Trachtenberg, associate professor of neurobiology at UCLA, found that this phenomenon is caused by a specific class of inhibitory neurons that control the time window, or "critical period," in early vision development, generally before age 7. The results of their study appeared online Aug. 25 in Nature.

The researchers discovered that improper functioning of these key neurons during the critical period of development is responsible for these vision defects. Additionally, in tests on mice, they used an experimental drug compound to reopen this critical-period window and treat the neuronal defects associated with temporary loss of vision in one eye during early development.

Their work suggests that drugs targeted to the critical period-regulating neurons can correct central vision disorders in children who've suffered from amblyopia or early cataracts.

"The specific type of neurons that mediate the critical-period window during childhood development have not been well understood until now," Xu said. "Our breakthrough outlines a new path for treatments that can restore normal vision in children who have had early vision disorders."


Story Source:

The above story is based on materials provided by University of California - Irvine. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sandra J. Kuhlman, Nicholas D. Olivas, Elaine Tring, Taruna Ikrar, Xiangmin Xu, Joshua T. Trachtenberg. A disinhibitory microcircuit initiates critical-period plasticity in the visual cortex. Nature, 2013; DOI: 10.1038/nature12485

Cite This Page:

University of California - Irvine. "New approach to remedying childhood visual disorders." ScienceDaily. ScienceDaily, 26 August 2013. <www.sciencedaily.com/releases/2013/08/130826123145.htm>.
University of California - Irvine. (2013, August 26). New approach to remedying childhood visual disorders. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2013/08/130826123145.htm
University of California - Irvine. "New approach to remedying childhood visual disorders." ScienceDaily. www.sciencedaily.com/releases/2013/08/130826123145.htm (accessed August 22, 2014).

Share This




More Health & Medicine News

Friday, August 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Newsy (Aug. 21, 2014) An experimental drug used to treat Marburg virus in rhesus monkeys could give new insight into a similar treatment for Ebola. Video provided by Newsy
Powered by NewsLook.com
Cadavers, a Teen, and a Medical School Dream

Cadavers, a Teen, and a Medical School Dream

AP (Aug. 21, 2014) Contains graphic content. He's only 17. But Johntrell Bowles has wanted to be a doctor from a young age, despite the odds against him. He was recently the youngest participant in a cadaver program at the Indiana University NW medical school. (Aug. 21) Video provided by AP
Powered by NewsLook.com
American Ebola Patients Released: What Cured Them?

American Ebola Patients Released: What Cured Them?

Newsy (Aug. 21, 2014) It's unclear whether the American Ebola patients' recoveries can be attributed to an experimental drug or early detection and good medical care. Video provided by Newsy
Powered by NewsLook.com
Lost Brain Cells To Blame For Sleep Problems Among Seniors

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Newsy (Aug. 21, 2014) According to a new study, elderly people might have trouble sleeping because of the loss of a certain group of neurons in the brain. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins