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Technology What Happens to Your Eyes If You Look Directly at the Sun During a Solar Eclipse?

19:33  20 august  2017
19:33  20 august  2017 Source:   time.com

Amazon is issuing refunds to customers who purchased suspect solar eclipse glasses

  Amazon is issuing refunds to customers who purchased suspect solar eclipse glasses Amazon is refunding customer purchases for protective solar eclipse glasses that it hasn’t been able to confirm come from a reputable manufacturer, according to a safety notification from the company. Excitement has been building for the upcoming solar eclipse across the United States on August 21st, and would-be eclipse viewers have purchased protective glasses from retailers such as Amazon.com. However, not all of the glasses found on the site are safe to use, with some vendors selling counterfeit or unsafe versions. Amazon appears to have been cracking down on these suspect glasses.

Looking directly at the August 21, 2017 solar eclipse can damage your naked eyes . Here's what you need to know and how to protect yourself. What Happens to Your Eyes If You Look Directly at the Sun During a Solar Eclipse ?

“ Looking directly at the sun is unsafe except during the brief total phase of a solar eclipse (“totality”), when the moon entirely blocks the sun ’s bright face, which will happen only within the Here’s what you need to know about why a solar eclipse hurts your eyes and how to protect your eyes effectively

The Age of Totality: <p>The sun is 400 times larger than the moon — but it's also 400 times further away. So when the moon's orbit takes it across the ecliptic — the apparent path of the sun through the sky — it can fit across it exactly. It happens roughly once every 18 months. Since the moon is drifting away from Earth at 3.8cm every year, such perfect total solar eclipses will not always occur. So we're born lucky, in an age of totality, but don't feel too blessed: The moon will one day be too far away from Earth to totally eclipse the sun (but that will take 538 million years).</p> 10 Things to Remember While Watching the Total Solar Eclipse

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For the first time in U.S. history, a solar eclipse will travel exclusively across America, enabling millions of people to view the moon block out the sun on Aug. 21. But those who watch this rare celestial event need to take precautions, because staring right at the sun can quickly harm your eyes.

“Looking directly at the sun is unsafe except during the brief total phase of a solar eclipse (“totality”), when the moon entirely blocks the sun’s bright face, which will happen only within the narrow path of totality,” NASA explains on its website. “The only safe way to look directly at the uneclipsed or partially eclipsed sun is through special-purpose solar filters, such as “eclipse glasses.”’

Man with eye damage from 1962 eclipse: Don't make the same mistake I did

  Man with eye damage from 1962 eclipse: Don't make the same mistake I did Fifty-five years ago, Lou Tomososki looked at an eclipse for a few seconds and damaged his eye forever.While watching, he saw flashes of light, much like he would after having a picture taken with a camera with a flashbulb. He had no idea those flickers would lead to permanent damage.

Why Does a Solar Eclipse Damage My Eyes ? "In the event that individuals look without the correct assurance [ at the sun ], they risk harming their eyes .

Even though sunglasses do protect the eyes from UVA and UVB rays, they will not be sufficient from protecting the eyes from looking directly at the sun during the solar eclipse . What happens to your eyes when you look directly at the sun ?

The path of totality, which is about 70 miles wide, is viewable from parts of 14 states, as shown on this solar eclipse map, and only lasts a maximum of two minutes and 40 seconds, according to NASA. Before and after the total solar eclipse, those in its path will see a partial eclipse, in which the moon only partly blocks the sun. The rest of the country will also see a partial eclipse — so essentially, everyone needs to prepare themselves to view the eclipse safely.

Here’s what you need to know about why a solar eclipse hurts your eyes and how to protect your eyes effectively:

Why Does a Solar Eclipse Damage My Eyes?

According to experts, viewing the sun with your naked eye during the eclipse can burn your retina, damaging the images your brain can view. This phenomenon, known as “eclipse blindness,” can cause temporary or permanent vision impairment, and in worst-case scenarios can lead to legal blindness, which entails significant loss of vision.

What time is the solar eclipse where I live?

  What time is the solar eclipse where I live? You'll need perfect timing to catch the exact moment the moon blocks the sun in your city. The total solar eclipse on Aug. 21 lasts less than a minute in some places, while a partial eclipse can be visible for an hour or more.

Here’s How The Sun Will Fuck Up Your Eyes If You Look Directly At This Solar Eclipse Today. “The only safe way to look directly at the un- eclipsed or partially eclipsed sun is through special-purpose solar filters, such as ‘ eclipse glasses,’" according to NASA.

You 've heard over and over that you shouldn't look up at the sun during Monday's solar eclipse (or ever, as a general rule), but what actually happens if you do? What happens if someone looks directly at the sun during the eclipse ?

  What Happens to Your Eyes If You Look Directly at the Sun During a Solar Eclipse? © Getty Images “If people look without the proper protection [at the sun], they run the risk of injuring their eyes. And if they get an injury, depending on how often and how long they look at the sun without the protection, they do have a substantial risk of developing a permanent loss of vision,” said Dr. B. Ralph Chou, president of the Royal Astronomical Society of Canada and a former optometry professor. It is not possible to go completely blind from looking at the eclipse, Chou said, because the injury is limited to the central part of your visual field.

There are no immediate symptoms or pain associated with the damage — the retina doesn’t have any pain receptors — so its hard to know at the time if you’ve actually been afflicted with eclipse blindness. If you look at the sun unfiltered, you may immediately notice a dazzle effect, or a glare the way you would from any bright object, but that doesn’t necessarily mean your retina is damaged. According to Chou, symptoms generally begin occurring 12 hours after viewing the eclipse, when people wake up in the morning and notice their vision has been altered.

If you're watching the total solar eclipse, don't forget to wear sunscreen

  If you're watching the total solar eclipse, don't forget to wear sunscreen Be sure to wear sunscreen — especially if you're planning to view it for a long time.&nbsp;While you might be more concerned with keeping your eyes safe from the sun, the hour or two you spend watching the whole process will leave your skin exposed.

“ Looking directly at the sun is unsafe except during the brief total phase of a solar eclipse (“totality”), when the moon entirely blocks the sun ’s bright face, which will happen only People have hurt their eyes by watching the sun during a solar eclipse unfiltered. However, it is a relatively rare occurrence.

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“They can’t see faces in the mirror, they can’t read the newspaper or the smartphone display, they’re having trouble looking at road signs, and basically they’ve got this center spot in their vision that is intensely blurred,” Chou said.

There are no remedies to effectively mitigate the injury, said Chou, aside from waiting and seeing if the patient regains vision. This does happen, but not until at least three months after the injury.

Has This Happened Before?

Yes. People have hurt their eyes by watching the sun during a solar eclipse unfiltered. However, it is a relatively rare occurrence. Although Chou said there is no definitive data on the number of people afflicted with eclipse blindness, he noted that after a solar eclipse crossed Britain in 1999, ophthalmologists reported 70 instances of eye injuries, and the majority of those people had viewed the eclipse unfiltered. In Canada, 20 cases were reported following the total solar eclipse of 1979. Of the cases reported over the years, Chou said half the people afflicted completely recovered their vision over the course of the following year.

How to Track the Solar Eclipse Without Going Outside

  How to Track the Solar Eclipse Without Going Outside Too lazy or busy to see the sky? Check out NASA's live broadcast or follow these hashtags to take part in the spectacle.Space fans across the U.S. are doing it big for the solar eclipse coming Monday. They're flying and driving to certain locations along the path of totality, where people will have the best view of moon covering the sun. They're reserving hotel rooms that cost eight times more than they normally do. They're buying eclipse glasses, intended to protect your eyes from sun damage, by the thousands.

In 1962, a teenager in Oregon named Lou Tomososki and a friend both made the mistake of looking directly at a partial solar eclipse without any protective eyewear. Tomososki saw bursts of light, like those from a flashbulb. His vision in his right eye never recovered.

For more information on eye safety during an eclipse , read through How To View a Solar Eclipse Safely online. Solar eclipses don't happen often and it is very cool to experience, especially if you are in an area that Looking directly at the Sun during a solar eclipse can cause what condition?

“It’s a fact that for individual practitioners, they are not seeing that many [cases] overall,” Chou said. “It’s only if you start looking at large populations in the hundreds of millions that you start adding up into significant numbers.”

What Can I Do to Protect My Eyes?

To ensure your experience is injury-free, listen to NASA’s advisory and buy eclipse glasses, which block approximately 99.99% of light rays. But also make sure follow NASA’s instructions in using these glasses. When the glasses are on, NASA says, it is imperative that you don’t look at the sun through an unfiltered camera lens, telescope, or binoculars.

Additionally, make sure that the brand of glasses you buy has been verified to meet the international safety standard, something Chou emphasized as critical to injury prevention. The American Astronomical Society has released a list of manufacturers selling these glasses that meet this standard. NASA also suggests you inspect your filter before putting it on, and discard it if it has any scratches or damages.

“If you don’t try to sneak a peek without the filter,” says Chou, “Then you should not run any risk of being hurt.”

This article was originally published on TIME.com

Eclipse: Family over the moon with totality baby .
As the moon made its way across the sun during a rare solar eclipse on Monday, Charlotte Roel Easterly said hello to the world. The 7-pound, 11-ounce baby girl was born at Sacred Hospital at 1:36 p.m. CT at the exact moment of the height of the eclipse in Pensacola. "It was literally during the eclipse, it was the most amazing thing," said Karen Lee, the baby's aunt. Even in the busy maternity ward, employees and patient family members took turns going outside with special glasses to view the eclipse, Lee said. "People had been talking about it all day," said Lee. USA TODAY Network: Complete coverage of the solar eclipse Her sister, Taria White, went into labor around 9 a.m. Lee said her sister had joked months earlier that she was going to have the baby during the eclipse, but it was an unexpected surprise when Charlotte was actually born during the height of the rare solar event. The odds were, well, astronomical. It takes three celestial bodies (the sun, moon and Earth) all of which are on various orbital paths, to line up in the exact way at the right time to create an eclipse. The last total solar eclipse visible in the U.S. was on Feb. 26, 1979. Monday's total eclipse was visible in the U.S. only — the first time that's happened since the country's founding in 1776, according to USA TODAY. "It was really special," Lee said.

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