Lasik eye surgery is one of the most well known and safe methods of vision correction, enabling people to get rid of their glasses and contact lenses. There are several Lasik variants, including contoura vision, smile and conventional lasik. The basic principle is reshaping of the cornea, to make sure the rays of the light can entering eyes stay focused on the retina. Reasons for Wearing Glasses The cornea and the crystalline lens in the eye are responsible for focusing on the light that enters the eye on to the retina. Any problem in the structure, especially curvature of the cornea, or in the length of the eyeball, simply means that the vision is completely blurred. In myopia, the light rays focus before the retina, and in hypermetropia they focus behind the retina. When it comes astigmatism, the light rays in various meridians, focus on various locations. When it comes to correcting the retina, you will have to wear glasses or contact lenses or go for