The most common symptom of myopia is blurred vision at a distance caused by the image falling inside the eye instead of on the retina, the light sensitive screen at the back of the eye. For low degrees of myopia glasses may only be used for tasks requiring clear long distance vision, for example driving. As the correction required for clear vision becomes higher, individuals often find it more convenient to wear their glasses more constantly. Contact lenses and laser surgery are other options for correcting myopia.
Myopia is becoming more common in our population and is probably caused by a combination of genetic and environmental factors. It usually develops during the teenage years, although it may occur less commonly in very young children or in adulthood.