The cornea is definitely the clear
covering for the front of the eye which helps you to bend and also focus
light so that it can easily form an image on the retina. In case the
cornea might be way too flat, images form behind the retina; this is
known as hypermetropia or farsightedness. In astigmatism, light strikes
the cornea from different angles and also can’t be sharply centered on
the retina.
Lasik is short for Laser-Assisted In
Situ Keratomileusis.