Don’t get duped by unlabeled eclipse glasses

There are plenty of eclipse glasses to choose from, but some are counterfeit.

Your glasses need a certification from ISO, which is the the International Organization for Standardization. If they don’t have it, they’re not fit for use come Aug. 21. The certification should be printed directly on the glasses.

There’s also a CE certification that denotes a product can be used in Europe, but even if your glasses have that, you still need the ISO mark.

NASA says you should look for two specific things.

“The two recommendations that they require in order to have a safe pair of glasses to view the eclipse is the name of the business, the company, and their address, in addition to the ISO regulation, not necessarily the CE regulation,” Cascade Eye Care optician Amanda Metcalf said Friday.

There are only five eclipse glasses manufacturers NASA recommends: Baader Planetarium, Rainbow Symphony, Thousand Oaks Optical, American Paper Optics, and TSE 17.

You should also not use glasses if the pair is over three years old or have scratched or wrinkled lenses.

Check out a detailed set of guidelines for eclipse safety here.