Myopia, or nearsightedness, can be caused when the eye is longer from front to back than a perfectly shaped eye. As a result, the lens projects the image it receives in front of the retina instead of on it. Another cause for this condition is too pronounced a curve in the cornea or lens in proportion to eye length. The images seen are often blurry unless they are close to the patient. Doctors measure nearsightedness in diopters. The numbers can range from -1.00 to as high as -35.00.
The traditional myopia treatments are glasses, contact lenses, and, in recent years, refractive surgery. These operations alter the cornea and, in turn, light hits the retina at or near the right spot. The best known version of this surgery is LASIK. In this operation, some corneal tissue is removed. Short-sightedness control is also possible when the internal lens is surgically removed and replaced with a better one. Short-sightedness treatment can also sometimes be achieved through the use of rigid contact lenses, because they make some changes in the cornea’s shape with consistent and regular use.
When short-sightedness is present in children, the condition can continue to worsen until the person reaches his/her twenties. The reason for this is the eye continues to grow and lengthen during childhood. Childhood myopia is traditionally treated with eyeglasses that can be replaced with contact lenses in the future. Because this condition can worsen and can become high myopia, a level of short-sightedness that is diagnosed when a patient is measured between -8.00 to -35.00 diopters, myopia treatment for this exceptional degree of visual impairment often requires both glasses and contact lenses. The glasses have to be made with an exceptional level of precision. Although, with the array on contact lenses available, they can be the only needed treatment. To avoid this problem, myopia control in some cases involving children, as been achieved through atropine drops. This short-sightedness treatment is prescribed by a doctor, and it appears to relax the eyes’ focusing muscles. This seems to slow or stop the eye from getting longer.
Short-sightedness control in children is also being tried with the use of glasses and contact lenses crafted to control the position of the image hitting the retina. It is believed when this done during childhood, the development of the retina will be appropriately stimulated and myopia will be controlled.