In an attempt to educate our customers, we will point out a number of these fallacies. The most common fallacy is that " if I take my doctor's prescription to any optical store I will be getting the same lens prescription." This may be true for prescription drugs, but it is not true for prescription lenses. There are no laws which govern the accuracy to which prescription lenses are filled. Although guidelines for accuracy do exist, compliance is the decision of the particular optical store. Unfortunately, many stores do dispense lenses which are not in accordance with the guidelines hoping the comsumer will not detect the difference. It's not that these errors are intentionally created, it's just that to correct them costs money, which reduces profits. Since vision is a totally subjective experience, a person with 20/100 vision corrected to 20/30 may not realize that 20/20 vision is possible.

Another fallacy is the assumption that lens manufacturers create similiar products. In reality there are countless lens designs made in an assortment of different materials and qualities by many different lens manufacturers. These are increasing and changing every day as new materials and technologies emerge. A skilled optician will possess objective knowledge regarding these lens designs and materials and will be able to make recommendations best suited to the visual needs of individual consumers.