OrthoK/Control Corneal Molding
What is Control Corneal Molding?Control corneal molding is a non-surgical way of correcting your nearsightedness and astigmatism. During the procedure, a series of therapeutic gas permeable lenses are applied to the cornea while you are sleeping. The therapeutic lens gently reshapes the central cornea overnight, and as a result, when you remove the cornea, your vision will be restored to 20/20.
How does the corneal reshaping lens work?One of the common disorder of human eyes is nearsightedness (myopia). In myopic eyes, light rays are refracted too much. As a result, the light rays converge to a point in front of the retina. Patients suffering from myopia will see blurred images at a distance. In order for one to see images clearly again, one can either shorten the eyeball or change the light bending ability of one’s eyes so that light rays can be focused at the retina again,
The human cornea determine 70% of how light rays bend. Therefore, if we can flattened the cornea and make the light rays bend to a point further back. Myopic eyes will then focus properly. The principle of corneal reshaping lens does exactly like what we described, it gently reshapes (flatten) the central corneal epithelium and alters the bending of light rays. As a result, light rays no longer focus in front of the retina, instead, it focus on the cornea again.
Because the corneal reshaping lenses only the epithelium of the cornea, it does not alter the physiology nor the structural integrity of the cornea. Therefore, the vision improvement last for 12 to 14 hours only. If you did not wear the lenses to retain the shape, vision become blur again.