Is it necessary for the prescription glasses to have UV protection?

[Terrell]

When I was purchasing glasses at the optical store,the salesgirl highly recommended a UV protection add-on to the lenses. I don't like the dim world looking through it.Is it necessary to have the UV protection?

[Melvin]

I think it is unnecessary for prescription glasses to have UV protection. Some kinds of prescription glasses have UV protection already. So make sure whether your glasses can block UV rays already before you add a UV protection.

[Cristopher]

It is better for the glasses to have UV protection to reduce the harms caused to your eyes.If you don't like the dim sight looking through it,you can choose the polycarbonate lenses which can block UV rays automatically but not 100%.

[Layton]

Too much UV exposure can cause cataracts later on in life and UV protection should not make things look dim.Maybe you need to change another place to get prescription glasses with UV protection.