Here you can find tactical glasses. They are created for modern warfare for compact in the cities, where high chance to get a small shrapnel and lose eyesight. Works the same way for airsoft.
This goggles created to fulfill two main aims - protect eyesight of soldier during CQB, where high chance to get a small shrapnel, and second one - protect eyesight from dust, wind and etc, during bad weather.
Here you can find different accessory for your glasses and goggles.