Georgia Attorney General Chris Carr has put consumers on alert to counterfeit solar eclipse glasses that could cause blindness.

As Georgians prepare to watch the moon block the sun totally over the northeast corner of the state Monday afternoon—and 97 percent in the Atlanta area—Carr offered some advice Thursday.

“Safely viewing the solar eclipse without sustaining eye damage has, unfortunately, gotten more complicated, since reports came out of counterfeit eclipse glasses being sold,” Carr said in a news release. “Counterfeit glasses may not offer sufficient protection from the sun and can lead to eye damage; therefore, we want to make sure that consumers take proper precautions so they can enjoy this once-in-a-lifetime occurrence.”