What does 140 on glasses mean?
Total Width: 140 mm. 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 does 135 on glasses mean?
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 does 48mm mean on glasses?
Eye size. The first number — the eye size — is the horizontal width of the lenses. In this case, the openings in the frame for the lenses are 48 mm wide. Generally, the eye size of most frames will be 44 to 62 mm.
What is the normal glasses size?
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″ |
How do I know what size glasses I need?
How to measure yourself for frames that fit perfectly
- Stand in front of a mirror and hold the ruler in line with your temple.
- Measure the distance between your temples in inches.
- Multiply your measured value by 25.4 to convert from inches to millimetres.
What do the 3 numbers on my glasses 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).
What does 52 mean for eyeglasses?
Understanding frame size is important. For example if you see an engraving such as 52-18-135 then this indicates that 52 is your lens diameter, 18 is your nose bridge width size (the gap size between the two lenses) and 135 is the temple length of your frame.
What is Prism on glasses?
Prism correction is used in eyeglasses for some people with diplopia, or double vision. This is when someone sees two separate images of one object. The prism helps align the two images, so that only one image is seen.
What does size E and W mean in sunglasses?
(W) is for Western Nose Bridge, best for a larger, wider fit around the nose. Designed for those with a higher nose bridge. This typically fits the average nose in the US/Europe/UK. (E) is for EasternNose Bridge, best for a smaller, narrower fit around the nose.
How do I know if my glasses are too big?
Your eyeglasses may be too big if they are always sliding down your nose or falling off your face. Your frames should align horizontally with your eyes and tilt slightly forward so the bottom of the frame is closer to the face than the top of the frame.
What are the 3 measurements on glasses?
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).