Have you ever noticed the small numbers printed on the arm of your glasses frame? It may not be important for the consumer to know the meaning of the numbers printed on products, but in the case of glasses, these numbers can tell you a lot!
Whether it's sunglasses, vision improvement, reading, computer, monitors, etc., these numbers are very important, especially if you're buying your glasses online!
1-What do the small numbers printed on eyeglass frames mean?
On typical eyeglass frames, you will find numbers from 3 standard groups, usually in the form of AA-BB-CCC.
The numbers representing AA correspond to the measurement of your eye volume, which is the horizontal width of the opening in one eye. This figure usually ranges from 42-58 mm, and the larger the value, the larger the tire.
The second number represented by BB measures the distance between the left and right lens, which is usually 16-24 mm.
Finally, the CCC value is the length of the two arms of the glasses, usually 130-150 mm. The larger your head, the higher this number so your glasses can sit comfortably on your face.
2-Why is it important to know these numbers?
A common misconception among patients is that the size of the eyes is fixed, and if the eye size of their current glasses is 54, the new glasses will be the same size as well. But this is not necessarily the case, because the values of AA and BB interact with each other.
Knowing these exact measurements makes finding comfortable glasses a very easy task, even if you buy glasses online.
While medical measurements are very important, knowing the correct facial measurements is just as important. You can use these numbers as a guide to find the most suitable glasses.
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