Online tools can help find existing glasses prescriptions without an exam. Here’s a hands-on review of one app to do just that, plus other top picks. If you’re one of them, you know how expensive and ...

The abbreviations and numbers on your eyeglass prescription describe the type and strength of lenses you need, and the degree of nearsightedness, farsightedness, or astigmatism in each of your eyes.

Visiting an eye doctor is no longer the only way to receive a prescription for glasses. Many online tools and services can provide a person with this information, but these should not substitute a ...