How could a cataract serve as a natural protective barrier

The main way in which a cataract can serve as a natural protective barrier is by reducing the amount of UV radiation that enters the eye from sunlight, which is also why it can lead to blindness, however. 

The native americans, spanish, french and americans all name places in our state. the word “arkansas” came from the quapaw indians, by way of early french explorers. at the time of the early french exploration, a tribe of indians, the quapaws, lived west of the mississippi and north of the arkansas river.