Amazon has “proactively” recalled solar eclipse glasses that “may not comply with industry standards” before darkness descends on the US next week, August 21.

To directly observe its awesome power without destroying their eyes, stargazers can use special filtered glasses that meet the ISO 12312-2 safety standards.

But the American Astronomical Society based in Washington DC has warned that some companies have been printing the ISO logo and certification label on faulty glasses and handheld viewers “made with materials that do not block enough of the Sun’s ultraviolet, visible, and infrared radiation to make them truly safe”. Some manufacturers were also allegedly displaying bogus test results on their websites.

An Oregon media outlet reported Saturday that it had received notification from Amazon that some solar filters it had purchased were getting recalled.

An Amazon spokesperson told The Register that “safety is among our highest priorities” and it decided “out of an abundance of caution” to contact affected customers and refund potentially fake eclipse glasses.

“We want customers to buy with confidence anytime they make a purchase on and eclipse glasses sold on are required to comply with the relevant ISO standard,” the spokesperson added.

They did not comment on when Amazon began contacting affected customers, how Amazon determines if glasses meet ISO standards, how many glasses have been recalled, whether all recalls have been completed, or how Amazon is handling affected sellers.

Source: Amazon recalls dodgy solar eclipse shades that offer no eye protection • The Register