Lasik Eye Surgery

Do some glasses show the lens strength right on the glasses?

There are different numbers printed around the frames. What do they mean?

The numbers on the frame are the measurements of the frame. The usually are something like 52-17-140. The first number is the length of the lens. The second number is the measurement of the bridge (nose) and the last is the length of the temple. This tells the lab where to center the prescription (along with the measurement of the distance between the person’s eyes.

The lenses will not show a person’s prescription. However, if a person has a no line bifocal, you can see the numbers of the bifocal power if you look about half way up the lens on the outside. It is hard to see, but can be seen if you look carefully.

ByField Optics Lens Strength Test

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