I have worn contact lenses for a long time due to near sightenness. They are lenses placed directly on the eye.
Oh!  Are they really helpful for your vision and better than glasses?
They provide a clearer vision than glasses, especially with regards to peripheral vision.
That sounds like a great benefit!  Are the comfortable enough to not realize they are in your eyes?
I believe so.  They work for a lot of people.  Over 125 million people worldwide wear them.
Wow!  I would never have guessed that many people wore them!  When were contacts invented?
I really have no idea.  I do know I prefer them when I play sports or do outdoor activities.