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

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800 Mn Smartphone Users In India By 2020: CISCO Study

The report added that India will be a major driver of this with the total number of Internet users reaching 840 million

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India currently has over 400 million smartphone users and over 700 million feature phone users. Image: Pixabay

The number of smartphone users is expected to double to 829 million by 2022 from 404.1 million in 2017, projects a new Cisco report.

This proliferation of smart devices will propel India’s per capita data consumption to nearly 14 gigabytes (GB) by 2022 from 2.4 GB in 2017, according to Cisco’s latest “Visual Networking Index (VNI)” report.

“By 2022, the smartphone data consumption will increase by five time in India — which proves the dominance of smartphones as the communications hub for social media, video consumption, communications, and business applications, as well as traditional voice,” Sanjay Kaul, President, Asia-Pacific and Japan, Service Provider Business, Cisco, said in a statement on Monday.

OnePlus, smartphone
By 2022, smartphones will account for 44 per cent of total Internet traffic, up from 18 per cent in 2017.. Flickr

The Internet is made up of thousands of public and private networks around the world. And since it came to life in 1984, more than 4.7 zettabytes of IP traffic have flowed across it.

One zettabyte is approximately equal to a thousand exabytes, a billion terabytes, or a trillion gigabytes.

In India alone, IP networks carried 108 petabytes of data per day in 2017 and are expected to reach 646 petabytes per day by 2022.

This is primarily driven by the growth in the number of smartphone users, said the report.

Twitter, India, Smartphone
Twitter on a smartphone device. Pixabay

By 2022, smartphones will account for 44 per cent of total Internet traffic, up from 18 per cent in 2017.

Also Read: Four Best Aviva ULIP Plans In India 2018

In 2018, PCs accounted for 41 percent of total IP traffic, but by 2022 PCs will account for only 19 per cent of IP traffic, the research showed.

Saying that more traffic will be created in 2022 than in the 32 years since the Internet started, the report added that India will be a major driver of this with the total number of Internet users reaching 840 million (60 per cent of the population) by 2022 from 357 million (27 per cent of the population) in 2017. (IANS)