With its fast growth rate -- and the rapid increase in the overall luxury resale market -- the San Francisco-based company has plenty of believers.

As Omicron cases surged in December, consumers lost interest in new glasses, sapping an estimated $5 million out of Warby Parker's fourth-quarter results.

The San Francisco-based D2C company announced disappointing second-quarter results and cut its forecast, sending its stock plunging to its lowest levels ever.

"Overly serious healthcare ads make healthcare feel intimidating and create higher emotional barriers to patients getting care," says company's marketing exec.