Answer: They're size measurements in millimeters. The first number (e.g. 52), is the width of the lenses. The second number (e.g. 20) is the distance between the lenses. And the third number (e.g. 135) is the complete length of the temple arm, which includes the portion that goes behind your ear.12 jul 2016
What does 140 mean on glasses?
Finally, the third number is a three-digit number that is 140, which represents the temple length. It is the length of the stems of the frame that rests upon your ears. It can be measured from the frame hinge to the end tip of the temple. The range of the temple length in most cases varies from 120 mm to 150 mm.29 abr 2020
What does 53mm mean in glasses?
Small 44-47mm
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Medium 49-52mm
Medium Large 52-54mm
Large 54-56mm
Extra Large 56mm and up
What is the normal glasses size?
Frame Size Eyeglasses Sunglasses
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Small Below 48 mm Below 55mm
Medium 48 mm- 55 mm 56 mm- 64 mm
Large Above 55 mm Above 64 mm
Why do my glasses have numbers on the lenses?
The markings are there for the optician or laboratory to be able to identify the major fitting reference points on the lenses so that they can be placed in the frame properly. The markings can also be used to identify fitting issues if a wearer has a visual problem after the glasses are dispensed.
How do I know my glasses Size?
If you look on the inside of your glasses, you'll find a number that looks like: 52 18 135. This information shows you the size of your glasses; the lens diameter, the bridge width and the side length, all measured in millimetres. 1: The lens diameter is the width of the lens (in mm), measured from the bridge.
What does 57 mm mean in sunglasses?
Regular. 55MM - 57MM. 5.25" - 5.5" Large.
What do the numbers mean on glasses?
Answer: They're size measurements in millimeters. They're measurements. The first number (e.g. 52), is the width of the lenses. The second number (e.g. 20) is the distance between the lenses. And the third number (e.g. 135) is the complete length of the temple arm, which includes the portion that goes behind your ear.12 jul 2016