Tuesday February 19, 2019
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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.

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SMARTPHONES
Young people using smartphones. (Photo courtesy Kuvituskuvat via Flickr) (VOA)

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)

Next Story

Andhra Government to Give Free Smartphones to 1.4 Crore Women

1.4 crore women in Andhra to get free smartphones

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The Andhra Pradesh government has decided to give free smartphones to all members of women’s self-help groups in the state to enable them to avail various government services on digital platform.

The state has around 1.4 crore members in Development of Women and Children in Rural Area (DWCRA) groups, popularly known as the women’s self-help groups.

The phones will have Android operating system and will come with a sim card with required speed, unlimited calls, daily 50 SMSes and 1 GB data.

K. Vijayanand, Principal Secretary, Information Technology, Electronics and Communications, on Wednesday said Andhra Pradesh Technology Service will be the nodal agency for procurement of the phones.

A procurement committee will announce guidelines for the same.

OnePlus, smartphone
Smartphone by OnePlus. Flickr

A technical committee will be framing guidelines to distribute the phones.

The Internet is expected to increase the reach of citizen services being provided by the government. He said the move would help bridging the digital divide.

Also Read- Blogger Sues Micro-blogging Site Twitter Over Ban on Tweets About Transgender People

The government is providing citizen services under various platforms like E-Pragati, Mee Seva, Yuva Nestam and Real Time Governance. There is also a toll-free number 1100 to lodge complaints.

There are already 900 web-based and 100 mobile applications available to provide various services to the people. (IANS)