Earlier this week, a couple in Colorado filed a class-action lawsuit against an eyewear chain they say gave them faulty eclipse glasses. Watching the moon’s spectacular crossing of the sun on Aug. 21 left them with distorted vision, according to their lawyer. A couple in South Carolina filed a similar lawsuit against Amazon in late August.

Tens of millions of eclipse glasses were sold ahead of the first total solar eclipse to cross the United States in nearly a century. And though no one has an exact tally, it’s clear that a significant portion were unreliable. Along with Amazon’s massive recall, there was the coffee chain that stopped trusting glasses gifted with lattes and the medical center that scrambled to locate shades distributed at the county fair. Even optometrists were getting duped.

“I found counterfeits in a country store in a small town in New Hampshire,” said Rick Fienberg, a press officer at the American Astronomical Society who became a sort of glasses safety referee in the weeks leading up to the eclipse. “If they reached there, they reached everywhere.”