Navigation Links
Chickens May Provide Clues to Color Vision
Date:2/19/2010

Studies of retinal differences in birds could lead to treatments for blindness, researchers say

FRIDAY, Feb. 19 (HealthDay News) -- Chickens and other birds have a better ability to see color than humans, a new study finds.

U.S. scientists mapped five types of light receptors in the chicken's eye and found that the receptors are arranged in interwoven patterns that maximize the bird's ability to see many colors in any part of the retina, the light-sensing structure at the back of the eye.

The findings were published recently in the journal PLoS One.

"Based on this analysis, birds have clearly one-upped us in several ways in terms of color vision. Color receptor organization in the chicken retina greatly exceeds that seen in most other retinas and certainly that in most mammalian retinas," study senior author Dr. Joseph C. Corbo, an assistant professor of pathology and immunology and of genetics at Washington University School of Medicine in St. Louis, said in a news release from the school.

The superior color vision in birds is likely because they didn't have to spend a lot of time in the dark during their evolution. In contrast, most mammals were nocturnal for millions of years. Daytime vision relies on light receptors called cones, while night vision relies on receptors called rods. Birds have more types of cones than mammals.

"The human retina has cones sensitive to red, blue and green wavelengths," Corbo said. "Avian retinas also have a cone that can detect violet wavelengths, including some ultraviolet, and a specialized receptor called a double cone that we believe helps them detect motion."

Learning more about how color receptors are organized could help lead to new treatments for the nearly 200 genetic disorders that cause various forms of blindness in humans.

"Many of the inherited conditions that cause blindness in humans affect cones and rods, and it will be interesting to see if what we learn of the organization of the chicken's retina will help us better understand and repair such problems in the human eye," Corbo said.

More information

The American Optometric Association explains why some people have color vision deficiency.



-- Robert Preidt



SOURCE: Washington University in St. Louis, news release, Feb. 15, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. FDA Approves Camelina for Broiler Chickens
2. Live Chickens on Trucks Could Transmit Dangerous Germs
3. Nurtur Is Selected By Keenan & Associates as Exclusive Provider of Disease Management Programs
4. Pollen.com Launches Features to Customize Allergy Information - Top Allergy Web Site Provides ZIP-specific Allergy Information and Diary to Track Symptoms
5. BCS Global Launches PSVN (Public Switched Video Network), an Initiative to Provide a Framework for Inter-Connecting Business to Business Video Networks
6. The Voice of Compassionate Cancer Treatment Just Got Louder: Website Provides Resources and a Call to Action for the Medical Community
7. Save the Children Provides Songs with Lifesaving Health and Nutrition Advice to Haitian Radio Stations
8. Top Raleigh Dentist Robert Williamson Designated A Preferred Invisalign Provider
9. MarquisNet Co-Location Agreement with MessageBroadcast Helps Message Delivery Provider Expand World-Class Network
10. Southridge LLC Provides Equity Capital Through Private Agreement with PuraMed Bioscience
11. Rhode Island Settlement Reflects Homeowner Liability for Serving Alcohol to Those Under 21, Says Providence Lawyer Mark Gemma
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/13/2016)... ... 2016 , ... The producers of Enterprises TV are pleased to ... modern world of instantaneous consumption proves very convenient for businesses. With new technologies constantly ... coal, which pollutes our air, water, and soil. It can also threaten the lives ...
(Date:2/13/2016)... City, Utah (PRWEB) , ... February 13, 2016 , ... When an Au Pair ... Parents aren’t always sure what they are in for and they are often worried things ... more than they were hoping for. This year’s Au Pair of the Year winner’s all ...
(Date:2/12/2016)... (PRWEB) , ... February 12, 2016 , ... According to ... surgeries are beginning to account for a significant portion of hernia repairs throughout the ... of the Beverly Hills Hernia Center notes that this trend has not only been ...
(Date:2/12/2016)... ... February 12, 2016 , ... ... announced a new initiative—the Siemens Foundation-PATH Ingenuity Fellowships—to develop the advanced skills ... recruit top students from U.S. universities who will draw from Siemens’ deep ...
(Date:2/12/2016)... Falls Church, VA (PRWEB) , ... February 12, ... ... in Store?, Feb. 29, 2016 — 1:30 p.m. – 3:00 p.m. EST, ... burner issue in the life cycle of pharmaceutical products, garnering increased attention from ...
Breaking Medicine News(10 mins):
(Date:2/12/2016)... , 12 februari 2016 ... een toonaangevende leverancier van productie en ontwikkeling ... industrieën, kondigt vandaag een uitbreiding aan van ... haar locatie in Charleston, SC ... geleid tot meerdere recente investeringen. ...
(Date:2/12/2016)... 2016 Indiso ltd ... ungedeckten medizinischen Bedarf bei Lungen- und Atemwegserkrankungen ... Forschungsprogramms bekannt. Das Programm, das sich mit ... respiratorischen Funktionen und anderer klinischer Parameter. ... das sich auf den ungedeckten medizinischen Bedarf ...
(Date:2/11/2016)... , Feb. 11, 2016 ... Companion Diagnostics in Personalized Medicine and Cancer Therapy. ... - High-Growth Diagnostic Testing Markets. - Key Diagnostic ... - Molecular Diagnostics in Genetic Testing. - ... Diagnostics Markets. - Over-the-Counter Diagnostic Products World Markets. ...
Breaking Medicine Technology: