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.
In this post
What do numbers on sunglasses mean?
The numbers beneath the frames reflect the SIZE MEASUREMENTS in millimeters (mm). THE FIRST NUMBER (ex.54) = the width of the lenses. THE SECOND NUMBER (ex.15) = the distance between the lenses. THE THIRD NUMBER (ex.140) = the length of the temple arm including the portion going behind the ear.
What do the 3 numbers on sunglasses mean?
temple length number
1) The eye size number (it is the size of the lenses on your frame). 2) The bridge size number (the distance between the lenses). 3) The temple length number (it is the size of that part of your eyeglass frame, which rests upon your ears).
How do you read sunglasses?
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. The length of the side is usually one of three standards — 135, 140 or 145mm.
What is the number on the nose piece of my glasses?
Specifically, the frame size numbers of glasses are: The key measurements that describe eyeglass sizes are the eye size, bridge width and temple length. All three frame measurements are specified in millimeters (mm). For example, let’s say you see these three numbers on the inside of your frames: 48-19-140.
How do I identify my glasses model?
Prescription glasses or optical grade glasses always have their model name and model number printed on the inside of either the right or left temple (arm) of the frame; model names and model numbers are not always printed in the same place. Some models have just a model name, but no model number, and vise versa.
Is the pupillary distance on my glasses?
?Can I find my PD on my glasses? You usually can’t find your PD number written on your eyeglasses. The numbers on the inside of the temple arms of some frames show the measurements for the frame itself. Your PD number should be written on your eyeglass prescription in the PD section.
Why are there numbers on my lenses?
With the help of these engravings, the optician can determine where the fields of vision for distance, intermediate, and near are located and whether the progressive lens is optimally positioned in front of your eye.
What are the numbers on glasses arm?
The first number, 54, represents the lens width; the second number, 16, refers to the bridge size, while the last number, 140, is the temple length. Sometimes there is a fourth number that refers to the lens height. These numbers come in handy and can act as a reference for you to pick the frames that best fit you.
What does 59mm mean in sunglasses?
The question then becomes what does this mean to you? When the sunglass size is indicated as “58mm”, this refers to the width of one of the lenses in the sunglasses. Above you see an image and the size “58mm” is measurement “A”, or the width of one of the lenses at it’s widest point.
What are sunglass sizes?
Find your perfect sunglasses size in 2 easy steps:
| Suggested Frame Size | Face Size (temple to temple) |
|---|---|
| Small 49MM – 54MM | 4.5″ – 5.1″ |
| Regular 55MM – 57MM | 5.25″ – 5.5″ |
| Large 58MM – 63MM | 5.75″ – 6.25″ |
What does 52 mean on glasses?
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. Many brands will have additional numbers on them as well.
Where is the model number on sunglasses?
It will usually display a few models along with a sample frame photo. Getting the correct lens width is important. Frames generally have two numbers preceding a small square on the left arm of your sunglasses. Alternatively you can manually measure your lens width.
What happens if you wear glasses with the wrong PD?
Your Glasses
If your pupil distance does not match where the centers of your pupils are, your vision can be affected– Like wearing someone else’s glasses! The wrong PD can induce eye strain, fatigue, headaches and blurry vision.
Does your PD change over time?
Your PD automatically adjusts during the day, as your eyes move between different viewing distances. Fortunately, when ordering glasses including progressive designs, only the distance PD is necessary as standard adjustments are made to accommodate for reading or computer vision.
Why do my glasses have markings on them?
These are the marks left on the surface of the lenses during the processing. It is a standard industrial practice to engrave or etch these markings to align exactly where the point in the lens is that starts changing from your distance Rx to your reading Rx.
How do you know if your glasses are too wide?
You can test this by smiling and seeing if your glasses rub against the apples of your cheeks. Your eyes should look out from the center of the lens, and the temple arms should rest lightly against your face. If your eyes are more toward the nosepiece of the glasses, the glasses may be too big.
How do I read my Ray-Ban number?
The number is for one of five categories from 0 to 4. 0 is for cloudy conditions; 1 is for partly sunny; 2 is for medium brightness; 3 for high intensity and 4 is for exceptional brightness. The following letter can be one of three — N for normal or non-polarised, P for polarised and F for photo-chromatic.
What’s the difference between 52 and 54 glasses?
Lens width is measured from left to right at the widest point in the lens. Between a 52 and 54 eyesize, the 54 will have a wider lens so the whole frame will be wider too. The lens will also be a little taller to preserve the shape. The bridge and temple measurements will usually remain the same.
Should sunglasses cover eyebrows?
But first, a few basic guidelines: The top of your glasses frame should follow the line of your eyebrows. Avoid having too much eyebrow above or below the frames. Sunglasses, however, should always cover your eyebrows.
What size frames for my face?
Glasses size guide
| Face size (temple to temple measurement) | Lens width | Arm length |
|---|---|---|
| Narrow (less than 129mm) | 50mm and under | 135mm-140mm |
| Medium (130mm-139mm) | 51mm-55mm | 140mm-145mm |
| Wide (over 139mm) | 56mm and above | 150mm or above |