what are plano glasses?

[Phillip]

I have heard some people say "plano glasses",but I don't know what the meaning of this,can anyone explain this to me ?

[Iker]

plano glasses are also called non-prescription glasses.People who have perfect vision wear plano glasses only for cosmetic purposes.There are many types of plano glasses for people to choose.People can choose any type of them to make them look more beautiful and stand out.However, wearing plano glasses can also protect the eyes from wind and UV rays.

[Esteban]

Plano glasses mean no correction is needed in the lenses. We say plano glasses, which often refer to the Spherical part of the Optometrist eyeglass Rx.