skip to main content
skip to newscasts

Thursday, April 25, 2024

Public News Service Logo
facebook instagram linkedin reddit youtube twitter
view newscast page
play newscast audioPlay

SCOTUS skeptical that state abortion bans conflict with federal health care law; Iowa advocates for immigrants push back on Texas-style deportation bill; new hearings, same arguments on both sides for ND pipeline project; clean-air activists to hold "die-in" Friday at LA City Hall.

view newscast page
play newscast audioPlay

"Squad" member Summer Lee wins her primary with a pro-peace platform, Biden signs huge foreign aid bills including support for Ukraine and Israel, and the Arizona House repeals an abortion ban as California moves to welcome Arizona doctors.

view newscast page
play newscast audioPlay

The urban-rural death divide is widening for working-age Americans, many home internet connections established for rural students during COVID have been broken, and a new federal rule aims to put the "public" back in public lands.

Blue Light Exposure: Understanding the Risks

play audio
Play

Wednesday, February 1, 2023   

With the increasing use of digital devices and computers in daily life, we're all exposed to more and more blue light. They may be convenient and help us stay connected, but prolonged exposure could pose real health risks.

One of those risks is interfering with the body's circadian rhythm, the "internal clock" which regulates a person's sleep cycle. Throwing it off can cause insomnia, headaches and eye strain.

Dr. Joseph Nezgoda, president of the Florida Society of Ophthalmology, said it does not mean a person should completely block out blue light, because a broad spectrum of light is needed throughout the day. But it is important to manage exposure.

"Individuals are just usually on their devices much longer and later than usual," Nezgoda pointed out. "Potentially during those times, it may be good to limit the exposure. Again, there's been convincing data in animal models, but in humans, the jury's still out."

One tip is scheduling an eye exam, others include taking breaks around every 20 minutes from digital screens, by looking at something else at least 20 feet away for 20 seconds. And of course, limit screen times before bed.

Dr. Scott Edmonds, chief eye care officer for UnitedHealthcare Vision, said eye specialists became concerned during the pandemic about blue-light exposure as more people started using digital devices for longer time periods at home. He worries soon, some of the same concerns will surface about blue light that happened with ultraviolet light.

"The photo receptors can certainly process blue light, but it puts a lot of strain on them," Edmonds noted. "We're concerned that over time, the retina will become damaged, and we'll start to see age-related macular degeneration from this, like we did with UV light."

In addition to taking screen breaks, eye-care professionals recommend making sure your computer screens are clear and clean, as researchers continue to study potential dangers.

Disclosure: UnitedHealthcare contributes to our fund for reporting on Health Issues. If you would like to help support news in the public interest, click here.


get more stories like this via email
more stories
Rep. Crystal Quade, D-Springfield, the House Democratic floor leader, called Missouri politicians "extremist" on social media after they passed the most restrictive abortion ban in the country and defunded Planned Parenthood. (Fitz/Adobe Stock)

Health and Wellness

play sound

The Missouri Legislature has approved a law to stop its Medicaid program known as MO HealthNet from paying Planned Parenthood for medical services for…


Environment

play sound

A round of public testimony wrapped up this week as part of renewed efforts by a company seeking permit approval in North Dakota for an underground pi…

Social Issues

play sound

Air travelers could face fewer obstacles in securing a refund if their flight is canceled or changed under new federal rules announced Wednesday…


The Iowa Movement for Migrant Justice calls Senate File 2340 a "ridiculous stunt," passed in an election year "to mobilize voters using fear and anti-immigrant sentiment." (Adobe Stock)

Social Issues

play sound

Advocates for immigrants are pushing back on a bill signed by Iowa Gov. Kim Reynolds in the last few days of the legislative session, modeled on a …

Environment

play sound

An environmental group is suing the U.S. Fish and Wildlife Service to protect the Arkansas mudalia snail under the Endangered Species Act. In …

Currently, more than 2.7 million Californians live within 3,200 feet of an operational oil well. (MSPhotographic/Adobestock)

Environment

play sound

Leaders concerned about pollution and climate change are raising awareness about a ballot measure this fall on whether the state should mandate buffer…

play sound

A coalition of climate groups seeking cleaner air at the rail yards and ports of Los Angeles and Long Beach will hold a "die-in" rally tomorrow at Los…

Health and Wellness

play sound

By Marianne Dhenin for Yes! Magazine.Broadcast version by Shanteya Hudson for Georgia News Connection reporting for the YES! Media-Public News …

 

Phone: 303.448.9105 Toll Free: 888.891.9416 Fax: 208.247.1830 Your trusted member- and audience-supported news source since 1996 Copyright © 2021