Excited about the eclipse? Great!
Think you can get by without those funny looking eclipse glasses? Nope. You literally could go blind — for real, for life.
"Eclipse blindness" is a thing. Without protecting your eyes, staring at the sun for any length of time — we're talking even seconds — can cause permanent damage, up to losing all of your vision.
No one wants that, so here's what you gotta do.
Buy Solar Eclipse Glasses
There's no easier or cheaper way around this if you want to look up at the sun. Regular sunglasses are a no-go.
You can find special solar eclipse glasses at Walmart, 7-Eleven, Best Buy, Lowes, ToysRUs, Home Depot or Amazon. They're typically made of cardboard and only cost a dollar or two each. Just remember if you order online, they may not arrive in time if you procrastinate. Stores are likely to run out too at some point.
If you want a more expensive option, try number 14 welder's glass goggles. Some of those look a bit more fashionable. Don't assume any pair of welder's glasses will do. They must be shade 14 or higher to be safe for eclipse viewing.
Watch Out For Fakes
Anyone will do anything nowadays to make a buck — including selling counterfeit eclipse glasses that could harm your eyes. Seriously?!
Laura Shelton, a first-grade teacher at the Discovery School in Shelbyville, Ky., learned that lesson the hard way. She bought a set of 50 glasses for her students from an online retailer but ordered replacements after realizing the first set wasn't from a verified manufacturer. She estimates she lost $30.
Spotting the fakes is rather easy.
Previous guidance from NASA had recommended consumer make sure glasses have the ISO number 12312-2 printed on them. However, some fakes are printing that on their glasses despite not meeting the requirements. So, do not rely on seeing "ISO number 12312-2" on the glasses. Instead, make sure they are from a recommended manufacturer.
NASA officials say only these five manufacturers make certified, approved eclipse glasses:
In addition to these five, The American Astronomical Society recognizes the following manufacturers as safe:
The manufacturer name and address should be printed on the glasses — be sure it’s one recommended by NASA or The American Astronomical Society.
And finally, look through the glasses before you get them. If you look through them and you can actually see things, they are NOT legit. If you look through them, and you can see the ground or see your hand in front of your face, you can be sure they are fake.
If you really don't want to look up at the sun, you can look down instead with a quick DIY project. And all it takes is punching a pinhole in a piece of paper. Just print out this instruction page, create a hole and find a piece of blank paper.
There's One (Short) Bit of Time It's Safe to Take Them Off
First caveat: You must be in the path of totality to even consider this.
The only time it's ever safe to look at the sun is during a total eclipse, when the sun is completely behind the moon. During that time, the otherwise hidden solar corona — the sun’s outer atmosphere — will become visible. Bright stars and planets will become visible as well. And everything will go dark and eerily quiet as plants and animals act as though night is falling and the temperature drops, sometimes by 10 degrees or more.
"But you've got to be careful," says optometrist Myron Wasiuta. "Just before it's over, you'll see beads of light starting to form on the trailing edge. That's the sign that you need to avert your eyes. The sun can be bright enough to cause retinal damage."
The total eclipse will only be visible in a narrow 67-mile stretch of the country running from Oregon to South Carolina. Here's a interactive map where you can enter your zip code and see how close — or far — you are from the total eclipse, which will last 2-3 minutes.
If you're looking at a partial eclipse, keep those glasses on.
No, These Are Not Safe Either
Just so we're clear. You need eclipse glasses. Apparently people will try all sorts of things to avoid that. Here's a list of items that don't work.
- Unfiltered Telescopes
- Polarizing Filters
- Space Blankets
And guess what: You can't hold binoculars or other magnifying devices over your eclipse glasses, either. The concentrated solar rays can damage the solar filter on the glasses and enter your eye.
It's really this simple, folks: Buy (certified) eclipse glasses. Save your eyes.
© 2017 USATODAY.COM