Solar viewer

The AAS maintains web pages giving detailed information about safe solar viewers[1] and a list of reputable vendors of eclipse glasses.

[5][6] The AAS said determining whether an eclipse viewer was safe required a spectrophotometer and lab equipment, but often the user should see nothing through the filter except for the Sun, sunlight reflecting off shiny metal, or intense light sources such as an LED flashlight.

"[4] On July 27, 2017, Amazon required all eclipse viewing products sold on its website have a submission of origin and safety information, and proof of an accredited ISO certification.

In mid-August 2017, Amazon recalled and pulled listings for eclipse viewing glasses that "may not comply with industry standards", and gave refunds to customers who had purchased them.

[8][7] On April 8, 2024, the Illinois Department of Public Health issued a recall on specific brands of eclipse glasses that failed to meet proper safety standards.