What does RX mean in glasses?

[Sean]

When I was choosing glasses frames in an optical store, I found most of them were labelled as " Rx-able". What does it mean?

[Miguel]

Rx-able means that these glasses frames can be fitted with prescription lenses. Some kinds of glasses in the optical stores cannot put prescription lenses into them. Only these glasses that are marked with " Rx-able" can be replaced with prescription lenses. If you have vision problems and need to wear prescription glasses, these eyeglasses can meet your needs. After you have an eye exam to get your prescription, the optician will ask their lab technician to put prescription lenses into the glasses frames.

[Richard]

Rx can also be understand as prescription for eyeglasses lenses. The eyeglasses frames labelled as " Rx-able" means the glasses frames available for prescription lenses (also called RX lenses). With it, it can provide the eyes vision aids. And you can get that RX from an eye eye doctor after having eye examination. So, if you are poor vision and need vision aids, you must prepare well prescription for buying rx eyeglasses.