What does ‘base’ mean in frames of eyeglasses?

How important is the base of frames in glasses?

The base of the frames is a crucial component in getting the best eyeglasses. It determines visual performance and may or may not be on par with your prescription. The same also goes for non-prescription glasses frames for men and women. Here are some things to keep in mind when understanding the base of prescription glasses online:

The base relates to the standard curvature of the frame, also known as a wraparound effect.

The higher your prescription number, the more wraparound the frame is.

On average, eyeglasses should have no more than a base of 4-6. However, the base can go as high as 8, especially for non-prescription sunglasses.

Prescription lenses also have their unique curvatures which may or may not correlate with the frames you need. Therefore, try and choose the right frames that work well with the base of your lenses.