Sunday October 21, 2018
Home Lead Story Blue Light Fr...

Blue Light From Smartphones Accelerates Blindness

Blue light introduced to other cell types in the body, such as cancer cells, heart cells and neurons, they died as a result of the combination with retinal. Blue light alone or retinal without blue light had no effect on cells.

0
//
23
SMARTPHONES
Young people using smartphones. (Photo courtesy Kuvituskuvat via Flickr) (VOA)
Republish
Reprint

Are you addicted to your smartphones, laptops and tablets? The blue light emitting from these digital devices can affect your eye’s retina and lead to age-related macular degeneration, according to a research led by a professor of Indian-origin.

Macular degeneration, an incurable eye disease that results in significant vision loss starting on average in a person in his 50s or 60s, is the death of photoreceptor cells in the retina. Those cells need molecules called retinal to sense light and trigger a cascade of signalling to the brain.

The findings showed that blue light exposure causes retinal to trigger reactions that generate poisonous chemical molecules in photoreceptor cells.

 The blue light emitting from these digital devices can affect your eye's retina
The blue light emitting from these digital devices can affect your eye’s retina . Flickr

“We are being exposed to blue light continuously, and the eye’s cornea and lens cannot block or reflect it,” said Ajith Karunarathne, Assistant Professor, University of Toledo in Ohio, US.

“It’s no secret that blue light harms our vision by damaging the eye’s retina,” he added.

Since photoreceptors, produced in the eye, are useless without retinal, one needs a continuous supply of retinal molecules to see.

“It’s toxic. If you shine blue light on retinal, the retinal kills photoreceptor cells as the signalling molecule on the membrane dissolves,” explained Kasun Ratnayake, doctoral student researcher at the varsity.

How blue light accelerates blindness
If you shine blue light on retinal, the retinal kills photoreceptor cells. Pixabay

“Photoreceptor cells do not regenerate in the eye. When they’re dead, they’re dead for good.”

In the study, published in the journal Scientific Reports, when the team introduced blue light to other cell types in the body, such as cancer cells, heart cells and neurons, they died as a result of the combination with retinal. Blue light alone or retinal without blue light had no effect on cells.

Also Read: Treating Blindness With Stem Cell Therapy

“The retinal-generated toxicity by blue light is universal. It can kill any cell type,” Karunarathne said.

To protect your eyes from the blue light, wear sunglasses that can filter both UV and blue light outside and avoid looking at your cell phones or tablets in the dark, he suggested. (IANS)

Click here for reuse options!
Copyright 2018 NewsGram

Next Story

Google Will Charge For Pre-Installed Applications On Handsets Sold In Europe

The company will also let phone makers install rival versions of Android, the most widely used mobile operating system.

0
YouTube, Google
The YouTube Music app is displayed on a mobile phone in Los Angeles. VOA

Google says it will start charging smartphone makers to pre-install apps like Gmail, YouTube and Google Maps on Android handsets sold in Europe, in response to a record $5 billion EU antitrust fine.

The U.S. tech company’s announcement Tuesday is a change from its previous business model, in which it let phone makers install its suite of popular mobile apps for free on phones running its Android operating system.

Android, Google
Google has replaced the Easter Egg image in the latest preview of Android O developer, and now an Octopus can be seen. Pixabay

It’s among measures the company is taking to comply with the July ruling by EU authorities that found Google allegedly abused the dominance of Android to stifle competitors, even as it appeals the decision.

Also Read: Chinese Smartphone Company Motorola Brings Its First Android One Smartphone to India

The company will also let phone makers install rival versions of Android, the most widely used mobile operating system. (VOA)