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Light in womb gives healthy eyes

RATE THIS! +9
Posted in Science on 16th Jan, 2013 09:41 PM by AlexMuller

A study, published in the journal Nature, showed that mice spending pregnancy in complete darkness had babies with altered eye development. It indicated tiny quantities of light were needed to control blood vessel growth in the eye.

 

The researchers hope the findings will aid understanding of eye disorders. If you could journey inside a mouse or a person, there would not be enough light to see. However, tiny quantities of light do pass through the body.

 

This effect has already been used to film an infection spreading through the body. Now scientists - at the University of California, San Francisco, and Cincinnati Children's Hospital Medical Center - believe that body-penetrating light can alter the development of the eye, at least in mice.

 

Normally, a network of blood vessels known as the hyaloid vasculature is formed to help nourish the retina as it is constructed. However, the blood vessels would disrupt sight if they remained, so they are later removed - like scaffolding from a finished building.

 

The researchers said this did not happen when the pregnancy was spent in total darkness. The critical period was around 16 days - which is very late in mouse gestation, but corresponds to the first trimester in people.



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