The Science Behind Myopia (Nearsightedness)
Myopia control is used to slow or stop the increase in axial length of the eye (how long the eyeball is). Blurry vision will cause the eye to extend in axial length, and as the axial length increases, the level of myopia will get larger. Children and adults can be treated with Ortho-K because the principle of flattening the cornea is effective for both types of patients. Myopia control is used to slow/stop the increase in axial length of the eye that occurs in growing children who are becoming more nearsighted each year (patients whose spectacle prescription continues to increase in power every year). Myopia control therapy can result in a lower prescription, so the patient won’t have to wear thick lenses, otherwise required, by the time they become a teenager.
One of the most exciting areas of research in Orthokeratology and Corneal Re-shaping (CR) has to do with the control of myopic progression. At the present time, it appears that CR can essentially stop the progression of myopia in a young, emerging myope (someone who is nearsighted). The use of CR lenses on a young myope is the best alternative for preventing the progression of myopia. Research indicates that it is better than Rigid Gas Permeable lenses (RGPs), bifocal therapy, progressive lens therapy, atropinizing drugs, vision therapy and under-correcting the myopia.