Blue light from your phone screen may speed up blindness, study finds

12 August, 2018, 19:27 | Author: Sherman Richardson
  • Blue light from your phone screen may speed up blindness, study finds

All smartphone and tablet screens also emit blue light. Neither blue light or retinal alone damaged the cells.

The results of a new study warn against using devices such as smartphones in the dark, as the blue light emitted from screens can damage the eye. "Photoreceptors are useless without retinal, which is produced in the eye". Blue light from digital devices and the sun transforms vital molecules in the eye's retina into cell killers, according to optical chemistry research at The University of Toledo.

The researchers are now measuring light coming from televisions, cell phones and tablet screens to get a better understanding of how cells in the eyes respond to everyday blue light exposure.

"We are being exposed to blue light continuously, and the eye's cornea and lens can not block or reflect it", Dr. Ajith Karunarathne, assistant professor in the UT Department of Chemistry and Biochemistry, said.

Macular degeneration, an incurable eye disease that results in significant vision loss starting on average in a person's 50s or 60s, is the death of photoreceptor cells in the retina. This is because the blue light causes it to trigger a series of reactions - a molecule in the affected cell's membrane distorts, then an increase in calcium changes its shape, and the cell dies.

Caused by the death of light-sensitive cells in the retina, while it doesn't result in total blindness the condition can make things like reading and recognising faces hard.

Everton star Richarlison indebted to Marco Silva
Fast forward three months and the north Londoners are under-fire from their fans after failing to make a single signing. Harry Kane, Christian Eriksen, Son Heung-min and Kieran Trippier have all signed new contracts since May.


Maryland Terrapins football Jordan McNair death DJ Durkin scandal timeline
August 3, 2018: Practice officially starts and, according to sources, the culture of bullying, led by Court, continues. Muschamp also addressed allegations from anonymous players, questioning their veracity and the players' motives.


Last-minute technical problem delays NASA's flight to sun
The probe is named after Gene Parker, who in 1958 wrote a paper theorizing the expansion of the solar atmosphere and solar wind. The corona gives rise to the solar wind, a continuous flow of charged particles that permeates the solar system.


Dr Ajith Karunarathne, an assistant professor in the university's Department of Chemistry and Biochemistry, said: "We are being exposed to blue light continuously and the eye's cornea and lens can not block or reflect it".

"We are being exposed to blue light continuously, and the eye's cornea and lens can not block or reflect it", said Ajith Karunarathne, assistant professor in the UT Department of Chemistry and Biochemistry, and one of the authors of the study.

Ratnayake said once these photoreceptor cells are dead, they are dead "for good" and can not be regenerated.

In the lab, the researchers combined retinal with various cells from the body, including photoreceptor cells, neurons, and heart cells.

The researchers did find a molecule called alpha-tocopherol that can stop the cells from dying, but the natural antioxidant fails to protect older users who are more susceptible to macular degeneration. "We know how it happened because there are multiple paths that lead to the cell death", said Karunarathne.

Karunarathne said you can use special sunglasses that filter both UV and blue light to try and combat the effects, but experts are unsure whether they do that much good. Any medicine would appear to help or delay macular degeneration, a condition that sees about 2 million new cases reported per year.

Recommended:



Popular

Manchester City boss Pep Guardiola believes six teams are fighting for title
When you watch their matches, they play with great confidence and Guardiola's coaching is clear in this team. After all the pre-match hype, Danny Welbeck is not even in the Arsenal squad, let alone at left-back.

Villarreal unveil ex-Arsenal midfielder Cazorla in freaky fashion
The 33-year-old believes that he still has some years left in the game. Villarreal unveiled Santi Cazorla at Estadio de la Ceramica stadium.

Ex-Nike employees sue company, allege unequal compensation
Cahill now works as a director of brand communications for Nike chief competitor, Adidas, according to her LinkedIn page. The lawsuit includes allegations of sexual harassment and mistreatment as revenge for rejected advances.

Erdogan warns Turkey's partnership with United States 'in jeopardy'
It is unclear how that would justify higher tariffs on Turkey but not other countries. This year, it lost more than 40 per cent. I am calling on those in America again.

U.S. stocks closed mixed amid data, earnings
Shares of trade-sensitive companies also declined, including Boeing, 3M and Caterpillar, which were all down at least 1 per cent. Microchip's shares fell 10.5 percent, the biggest decliner on the S&P, after it forecast disappointing second-quarter revenue.

Trump blasts Omarosa as 'lowlife' after reports on new tell-all book
Manigault Newman went on to become Assistant to the President and Director of Communications for the Office of Public Liaison. White House press secretary Sarah Huckabee Sanders criticized Unhinged as "riddled with lies and false accusations".

Chelsea Confirmed Lineup vs Huddersfield: Kepa, Jorginho make Premier League debut
Though the team lost the Community Shield to rivals Manchester City, the winger has backed the new Blues' boss. Things are looking good for Chelsea if he can maintain this sort of form.

Heavy security as Charlottesville stores open
Organizer: The event was organized by Jason Kessler, who already had last year's rally on his resume. President Trump urges peace for all Americans one year after the deadly incidents in Charlottesville.

Turkey shaken by financial fears, Trump rattles it further
With new Iran sanctions coming up, more Turkish banks could face US probing if they are doing business with the Islamic republic. Turkey has accused Andrew Craig Brunson of spying and " committing crimes on behalf of terror groups without being a member".

Seattle Man Dead After Stealing and Crashing Plane, Investigation Underway
The jets were armed but did not open fire, North American Aerospace Defense Command spokesman Cameron Hillier said by phone. The plane crashed into a small island in the Puget Sound some time after 8 p.m. local time , according to authorities.