It is news to me that I am "required to have a current prescription" to buy my eyeglasses. Sure, optometrists want you for an annual checkup as much as your reg

It is news to me that I am "required to have a current prescription" to buy my eyeglasses. Sure, optometrists want you for an annual checkup as much as your regular doctor or dentist... but the eyeglass store? Never heard of it. Perhaps this is because I purchase my eyeglasses online, e.g. Zenni. I could pull out my prescription from last year or five years ago and they'd take it at face value along with my credit card.