what is the advantage of contact lense?

well, my brother in law wore glasses and also contact lenses when he needed too. he didn't wear his too much because it sometimes irritated him. some people like it because they don't have to worry about the glasses falling or they may find it irritating. it all depends. some brands on contact lenses are supposed to be really good in comfort wise. but i've heard it can be a hassle sometimes, putting it in and cleaning it.