The Associated Press

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By Grant Butler, The Oregonian/OregonLive

Two Portland health care providers are warning people not to use eclipse glasses that were handed out for free at recent public events.

Both Legacy Health and Alberta Eye Care say eclipse glasses that they recently gave out are part of a recall by Amazon.

On Thursday, Legacy Health reported that glasses that were handed out at recent public events are unsafe and should be discarded. Legacy also said that solar glasses given away at any of the Legacy Devers Eye Institute clinics during the past month meet ISO standards and are safe to use. Solar glasses given away at any of the Legacy/GoHealth Urgent Care clinics over the past month also meet ISO standards and are safe to use.

Earlier this week, Alberta Eye Care reported that it was recalling more than 400 pairs of eclipse glasses that were handed out earlier this month at the Alberta Street Fair. The glasses feature the business logo on the right temple, and were purchased by Alberta Eye Care from a company that did not have proper certification for the glasses.

Alberta Eye Care has purchased a supply of certified eclipse glasses and will replace the glasses that were handed out at the fair. Legacy is urging people to throw away the glasses that were handed out at public events.

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Courtesy of NASA

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The recalls come as demand is rising for Monday’s solar eclipse, and amid reports that some stores are running out of stock.

The American Astronomical Society had previously cautioned consumers to only purchase eclipse glasses that were clearly marked "ISO 12312-2," which means the glasses meet international safety standard for filters for direct viewing of the sun. But following reports of counterfeit eclipse glasses, which are labeled as if they're ISO-compliant, when in fact they are no, the society now recommends looking for glasses with both the ISO designation and the name of one of their recommended list of reputable manufacturers.

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List of reputable vendors

Here is the society's list of reputable vendors of solar eclipse glasses, as well as filters for cameras and telescopes:

American Paper Optics (Eclipser) / EclipseGlasses.com / 3dglassesonline.com

APM Telescopes (Sunfilter Glasses)

Baader Planetarium (AstroSolar Silver/Gold Film)

Celestron (EclipSmart Glasses & Viewers)

DayStar (Solar Glasses)

Welding filters with shade 12 or higher

Explore Scientific (Solar Eclipse Sun Catcher Glasses)

Lunt Solar Systems (SUNsafe SUNglasses)

Meade Instruments (EclipseView Glasses & Viewers)

Rainbow Symphony (Eclipse Shades)

Seymour Solar (Helios Glasses)

Thousand Oaks Optical (Silver-Black Polymer & SolarLite)

TSE 17 (Solar Filter Foil)

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Courtesy of Bill Kramer

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Next week's solar eclipse cuts a path across the continental United States, with the path of totality stretching from the Oregon to the South Carolina coasts. The eclipse will be visible across the country, though places further away from the path of totality will see the sun obscured to a lesser degree.

In addition, NASA and the American Astronomical Society offer these eclipse glasses safety tips:

If the lenses have scratches, they are unsafe to use.

Don't use the glasses if the lenses are wrinkled.

Glasses that are older than three years shouldn't be used.

It's OK to use solar eclipse glasses over regular eyeglasses or contact lenses. Just make sure the glasses are securely on before looking at the eclipse.

Stand still and cover your eyes with your eclipse glasses before looking up at the sun. After looking at the sun, turn away and remove your filter -- do not remove it while looking at the sun.

Never look through binoculars, a telescope, a camera equipped with a telephoto lens, or other optical devices while wearing eclipse glasses. These devices concentrate the rays of the sun, and will damage your eclipse glasses, rendering them useless and causing serious injury to your eyes.

If you are inside the path of totality , remove your solar filter only when the moon completely covers the sun's bright face and it suddenly gets quite dark. Experience totality, then, as soon as the bright sun begins to reappear, replace your solar viewer to look at the remaining partial phases.

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The Associated Press

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More on the eclipse

What will the 2017 solar eclipse look like? 19 cities ranked by visibility

17 places to watch the solar eclipse around Oregon

8 things you need to do to prepare for the total solar eclipse

Solar eclipse frequently asked questions: Do I need special glasses? Will my dog be safe?

10 eclipse tips from Oregon agencies during their Reddit AMA

Solar eclipse glossary: 21 terms to make you sound like an expert

16 things to have in your car for a solar eclipse road trip

8 things you need to do to prepare for the total solar eclipse

Where to buy marijuana in the path of totality

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-- Grant Butler

gbutler@oregonian.com

503-221-8566; @grantbutler

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