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

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.

 

Ray Kurzweil

 

Shape of eye's 'light pipes' is key to colour sorting

RATE THIS! +21
Posted in Science on 7th Mar, 2015 07:58 PM by AlexMuller

Physicists have pinned down precisely how pipe-shaped cells in our retina filter the incoming colours. These cells, which sit in front of thoes that sense light, play a big role in our colour vision. They funnel crucial red and green light into cone cells, leaving blue to spill over and be sensed by rod cells - which are responsible for our night vision.

 
Key to this process, researchers now say, is the exact shape of the pipes. The long, thin cells are known as "Muller glia" and they were originally thought to play more of a supporting role in the retina. They clear debris, store energy and generally keep the conditions right for other cells, like the rods and cones behind them - to turn light into electrical signals for the brain.
 
But a study published last year confirmed the idea, proposed in earlier simulations, that Muller cells also function rather like optical fibres. And more than just piping light to the back of the retina, where the rods and cones sit, they selectively send red and green light - the most important for human colour vision - to the cone cells, which handle colour.
 
Meanwhile, they leave 85% of blue light to spill over and reach nearby rod cells, which specialise in those wavelengths and give us the mostly black-and-white vision that gets us by in dim conditions.

Tags: eyevisionmedicineanatomycells

Read original article » Back to category

Comments

Author: Guest
Posted: 2015-03-08
+1
Vision is very important to people and problems in this area could be a cause of severe disability and loss of independence. It is great to see progress in this area Reply


 

Recent headlines

  • Posted in Medicine on 2017-08-18 18:35:43
    Those at greater risk of having schizophrenia are more.....read more
    Posted in Science on 2017-08-18 18:46:40
    New energy to play a dominant role in China by 2030..read more
    Posted in Science on 2017-08-18 18:41:00
    Astrophysicists predict Earth-like planet 16 light years.....read more
    Posted in Medicine on 2017-08-18 18:30:00
    Alzheimer's may be detected early, via eye exam..read more
    Posted in Medicine on 2017-08-17 17:34:13
    Liquid Biopsy Passes Test for Early Cancer Predicts 59%.....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
    Scientists probe Neptune's depths to reveal secrets of icy.....read more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin cancer.....read more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not work..read more
    Posted by AlexMuller
    Artificial neural networks decode brain activity during.....read more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the nearest.....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