Well, I can see that you know little about plano sunglasses. Anyway, there are various kinds of sunglasses in terms of functions. And plano sunglasses means that they are non- prescription, which means they could not correct your vision, but they could well protect your eyes from harmful lights. Of course you could wear plano sunglasses if your eyesight is good. Just consult the salesperson when you buy sunglasses at stores.