Contact lenses make contact with the eye. Glasses do not do this. Contacts float on a thin layer of liquid. There are three types of lenses the corneal , scleral , and the haptic . The scleral contact goes over the whole front eye.
Corneal contacts are small and light.
Corneal contact lenses are the most popular contact. These contacts do not restrict your vision. They move with the eye. Haptic lenses are thick and are held in place by the eyelids. These lenses are worn by people in sporting events because they do not pop out as easily.