https://www.cnet.com/news/test-your-vision-at-home-with-the-eyeque-for-23-99-shipped/

Not long ago I discovered a way to check your current eyeglass prescription without an exam. That's fine if you already have glasses and/or don't think your vision has changed.

Ah, but what if you're new to eyewear or think you need a new prescription? Time to schedule a pricey, time-consuming exam, right?