Light in womb necessary for healthy eyes: Study
London: Scientists have discovered that light passing through the body and into the womb has an important role to play in the development of eyes.
US researchers found that mice spending pregnancy in complete darkness had babies with altered eye development.
This indicated tiny quantities of light were needed to control blood vessel growth in the eye, the BBC News reported.
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.
"It`s not something subtle here, it`s a major effect on the way the retina develops that requires light going through the body," said Professor Richard Lang, from Cincinnati Children`s Hospital.
He said it was a "huge surprise" that this was happening.
The researchers hope their findings may aid understanding of human diseases of the eye, as many are down to blood vessels.
Some babies born prematurely develop "retinopathy of prematurity", when the blood vessels in the eye grow abnormally resulting in damage to the retina and a loss of vision.
"In retinopathy of prematurity there is overgrowth of blood vessels and that`s what you see in these mice," Lang said.
The researchers showed that light was activating in the mice a protein, melanopsin, which also has a role in regulating the body clock, and is present in people.
However, whether the same processes take place in people or other animals is unknown.
The study was published in the journal Nature.
More from India
More from World
More from Sports
More from Entertaiment
- Revealed - How Indian Army hit terror camps across LoC!
- Pak forces will teach Zee News what real surgical strike is: Hafiz Saeed
- DNA: Indian Army carries out surgical strikes across LoC
- India used 'Cartosat 2c' satellite in surgical strikes against Pakistan
- Panel discussion on Hafiz Saeed's reaction after Indian Army surgical strikes
- Hafiz Saeed threatens Zee News, says Pak forces will teach what real surgical strikes are
- Pak postpones SAARC Summit after five member states pull out of conference: As it happened
- After threatening Zee News, Hafiz Saeed says PM Modi, Ajit Doval staged `surgical strike drama'
- India's surgical strikes: Pakistan buries slain terrorists to hide evidence, asks Masood Azhar to go mum
- Who is Chandu Babulal Chauhan and why India wants to bring him back from Pakistan - Read