People with defective eyesight usually choose to wear corrective eyeglasses with specific prescriptions. For most of these patients, it is necessary to make periodic visits to an eye care practitioner for eye checkups. If necessary, lenses with a higher power are recommended by the doctor. Most people think all these things done by eye doctors are reasonably right. The eyesight will continue to deteriorate even with the usage of correction eyeglasses. In this sense, they are required to purchase new pairs of glasses year after year. However, it is necessary to doubt this common practice taken by eye doctors. The following are some of the reasons.
It is quite understandable that nearly all eye doctors want to sell more eyeglasses or contact lenses to their patients. It is acceptable due to business interests. However, this reasonable thought may lead to unnecessary glass replacements at the side of a patient. In some cases, impaired vision is worse than invaluable expense. In this case, all patients should bear in mind the doctor’s thought and expectation.
Secondly, some eye doctors may try to overprescribe their patients’ eyeglasses. Eyeglasses with an appropriate power should only assist the eyes in perceiving regular objects. Perfect vision supported by glasses is actually unnecessary. In opposite, an overprescribed pair of eyeglasses would cause the eyes to deteriorate more rapidly. In a normal case, corrected 20/40 vision is enough.
A third reason involves the conditions in the eye doctor’s office, in which eye checkups will be conducted. In the darkened room, a patient’s eyesight is often worse than usual. This can be testified that one’s vision is usually better in bright sunlight. With this fact in mind, patients should courageous enough to doubt the testing results in the doctor’s office. Instead, it is advisable to make a counter measurement by oneself. There are formal eye charts on the Internet. Any patient can check his or her vision in a normally lit room, in bright sunshine and in artificial light.