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What Are The Numbers On The Side Of My Glasses

The Numbers On Your Eyewear Are More Important Than You Think

What Do the Numbers on Glasses Mean? | SportRx

Hey, you, with the glasses! Have you ever noticed those tiny numbers printed on the arm of your frames? It might not always be important for the consumer to be familiar with the numbers on their products like a toaster or tires, but in the case of eyewear, those numbers can actually tell you a lot about your frames. Whether you have distance glasses, reading glasses, polarized sunglasses, or even blue light glasses, your eyewear is more than just a prescription. Knowing what these numbers mean can be especially important if you want to buy glasses online. So, lets break it down. Either way, you can add some new interesting facts to your repertoire.

What Is The Average Glasses Frame Size

Frames for adults vary slightly for men and women, but are generally made to standard sizes similar to shoes or clothes. Depending on the brand, there may be size options available in the lens width, bridge width and temple length.

  • Average adult lens widths: 40 60mm
  • Average adult bridge width: 14 24mm
  • Average adult temple lengths: 120 150mm

*Oversized frame styles can exceed these dimensions, especially womens butterfly sunglasses, oversized mens frames or bespoke editions.

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How To Find Your Glasses Measurements

Your glasses measurements may be closer than you think. Usually, the frame manufacturer prints the size numbers on the inside of the glasses temples. Sometimes they will print them on the bridge.

Look for a series of three numbers. They will look similar to this:

1. Lens width: The first 2-digit figure represents the lens width (typically between 31mm-60mm

2. Bridge width: The second 2-digit figure represents the bridge width

3. Arm length: The third 3-digit figure measures the length of your frame arms

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What Are The Markings On My Progressive Lenses

Laser engravings in modern lenses are there to assess the centering of the lens in the glasses. Especially in progressive lenses, several engravings are placed in the lens by the manufacturer to provide the following information.

  • Position of the lens vertically
  • Position of the lens horizontally
  • Axis position of the lens
  • Type of progressive lens
  • Strength of near addition ADD value

All this information can be found by looking closely at the engravings. You can see the engravings if you hold the lenses against the light. With some manufacturers, the engravings are more pronounced than with others. However, the position of the engravings is standardized.

Both engravings in the horizontal are 34mm apart. These engravings are illustrated again for you below in the picture. 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.

The optician simply marks the horizontally arranged markings with a water-soluble pen. These can then be placed over a template and the other points, such as the through-vision point for distance or the position of the reading part, then become visible.

How To Find Your Glasses Size

Using Charts To Convert Glasses Prescriptions To Contact Lenses ...

Finding the ideal eyeglass frame size is super important when buying glasses online. But did you know it’s also super-simple? For the great majority of people M is the right size. It is very likely it is going to be the correct size for you too.

To be sure, use one of the following techniques to find the size of the glasses:

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Scanning Lenses That Glassesusa Doesnt Make

I knew that GlassesUSA wasnt designed for my type of prescription, but out of curiosity, I completed the scan using my own eyewear.

How the first scan went

After doing all of the steps, a screen came up indicating that my glasses were out of range and couldnt be read.

Even though this confirmed that I couldnt use the app, it was good news because it showed that the GlassesUSA app read my prescription correctly, and gave me accurate information that it couldnt be filled.

How the second scan went

I tried it a second time with my own eyewear so that I could get a better handle on all of the screens.

I was surprised that this second try brought a different result. The app took me through the entire process and continued to try to read my prescription at 99 percent complete for over 20 minutes. It never finished and never sent me an error message.

Reading Your Frame Size

You will need to know which frame size fits your face the best. Start by looking at a pair of glasses you already own , and check for a set of three numbers located somewhere on the inside temples of your eyeglasses. These numbers are there to indicate the measurements of your frames in millimeters and they can help a lot when you are shopping for new glasses online. The three numbers represent the lens width, the bridge width, and the temple length :

  • Lens width – the horizontal width of both lenses at their widest point and typically ranges between 40mm to 60mm.
  • Bridge width – the distance between the two lenses or the space where your frames fit against the nose. These numbers should range between 14mm and 24mm.
  • Arm / temple length – how long each temple is from the screws to the tip and includes the part that bends near your ear. Most temple or arm lengths range from 120mm to 150mm in length.
  • Lens height – the vertical height of the lenses as the widest point inside of the frame. Most bifocals and progressive lenses use lens height measurements.

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Glasses Measurements: How To Find Your Frame Size

Have you ever looked at one of the arms of your glasses and thought, What do those numbers mean? Or, perhaps you didnt realize that glasses had numbers displayed on them in the first place?

The numbers inscribed on the inside of the arm are eyeglass measurements. Theyre one way to find a glasses size that feels comfortable on your face and does a good job of correcting your vision. Differences of just a few millimeters can significantly change how glasses look and feel on your face, so they can be an important part of getting to know your eyewear.

Want to know your glasses size? Well teach you how to read and take these measurements, as well as how to pick out some perfectly sized frames.

Whats A Magnetic Card

How To Find Your Frame Size? |

Cards with magnetic strips are generally the size of a standard credit card. These include gift cards, debit cards, and some ID and transit cards.

GlassesUSA describes using a magnetic card to take certain measurements and images for the scanning app.

We suggest using something without identifying markings and without account information on it.

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How To Measure Your Face For Glasses

Not everyone who needs new glasses has an old pair that they can reference for measurements. In these cases, it can be helpful to look at your face and make some estimations as to what glasses size you might need. But remember: Comfort, fit, and confidence are your top priorities, and the best way to find the right frame for you is by trying glasses on!

What Do The Numbers On Glasses Frames Mean

You may notice numbers such as 47-19-140 in the temple of glasses frames. But did you know these numbers actually describe the frame size? Glasses manufacturers typically use the same format to detail sizes. And its easy to find the correct frame size for your face type. Simply measure your face or check your current glasses to find the ideal size. Opticians and optometrists also rely on these numbers to determine the best fit.

Weve put together this guide to help you understand exactly what these numbers mean and how to read them correctly.

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    A Glossary Of Eye Prescription Abbreviations

    • ADD stands for the additional lens power needed to make it easier for you to read. This number is seen on prescriptions for reading glasses or the lower portion of bifocal or progressive lenses.
    • Axis is a number between 1 and 180. It indicates exactly where the astigmatism appears on your eye.
    • BO, BI, BU, BD stand for base out, base in, base up, and base down. These abbreviations tell the eyeglass manufacturer exactly where to position the prism on eyeglasses that correct double vision.
    • CYL stands for cylinder, or the amount of astigmatism in your eye. The cylinder and axis together help correct astigmatism.
    • DV is an abbreviation for distance vision. This number indicates whether you have nearsightedness or farsightedness.
    • NV stands for near vision, or the amount of power that needs to be added to make reading easier.
    • OD means oculus dexter, or your right eye.
    • OU stands for oculus uterque, or both eyes.
    • OS is oculus sinister, or your left eye.
    • PD means pupillary distance. Monocular PD is the distance from your pupil to the middle of your nose. Binocular PD is the distance from one of your pupils to the other pupil.
    • Prism is used if you have double vision. It indicates the amount of prismatic power your glasses need to correct for differences in the alignment of your eyes.
    • SPH means sphere, or the power of the lens that will correct your eyesight.

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    How To Determine Glasses Frame Size

    Patent USD468339

    Though its best to find the right-sized frame in person, its not always possible, right? So we often have to order it online. In that case, its a bit tough to determine the glasses frame sizes perfectly. But I have one hack for you.

    Stand in front of any mirror holding a ruler in your hand and hold it straight so its in line with your face and temple. Then measure the approximate distance between temples. If the number is in any unit but millimeters, convert it to mm.

    After measuring your face, determine whats the frame width you want. That would be the summation of three things. Width of two lenses and the length of the bridge. And there you go, the number you got should be your glasses frame size. It might vary slightly by one or two mm.

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    What Are The Bridge And Nosepads

    This functional information describes the different types of the bridge and the nosepads.

    The four possible bridge and nosepads options are: High bridge fit: offers a more secure and comfortable fit for those with a high nose bridge and lower cheekbones. A good choice if the bridge of your nose is above the level of your pupils. Low bridge fit: offers a more secure and comfortable fit for those with a low nose bridge and higher cheekbones. A good choice if eyewear tends to slide down your nose, sit too low, or press on your temples or cheeks. Universal fit: this option accommodates most face shapes. Adjustable nosepads: nosepads that can be widened or narrowed to fit your unique nose shape.

    Find The Perfect Frame Size

    Discover which eyeglass frames look best on you by checking out our full collection of prescription frames for men, women and children, and get the scoop on the best lens index for you with our lens indexes guide. At EyeBuyDirect, we offer a 14-day fit and style guarantee to ensure you find the perfect frames and a 12-month guarantee on all of our products.

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    How To Shop Online With Your Glasses Measurements

    Now that youve learned a little more about how to measure your glasses and find the right size for your face, youre ready to shop for glasses online.

    One other measurement youll need is your PD . This should be included with your prescription, but if its not you can also learn how to measure your PD yourself .

    Temple Length And Lens Measurements

    Your Glasses Prescription Explained | Specsavers

    The temple length of your glasses is measured in millimeters and usually only varies between about five millimeters, with 135mm, 140mm, and 150mm being the most common. Your temples should fit comfortably horizontally and evenly along the side of your head, and the ends should fit comfortably on the outside of your ear. If the temples feel too loose or tight, you may need to go up or down a measurement.

    For lens sizes, smaller options are typically 50mm or less in width. Medium lenses are between 51mm and 54mm, and large lenses are usually wider than 55mm. When you try on glasses, make sure that your eyes are perfectly centered with the lenses. Frames that are too wide can make it seem as if your eyes are too close together, and narrow frames will make your eyes appear too wide-set. Use this simple guide for glasses measurements to help you find the perfect pair.

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    Find Your Lens Width Measurement

    Hold the ruler just below your eyes and measure the distance between your left and right temple. This will give you the measurement for the total width of your glasses.

    Remember frame sizes are broken down into individual lens width. To calculate this, youll need to:

    • Subtract your bridge measurement from your temple measurement
    • Divide that number in half

    This will give you the size of your ideal lens width.

    Side Note: About Frame Height

    There is a fourth number worth mentioning. This is the lens height which is important in some instances. For example, bifocal and progressive lenses have multiple focus zones. So youll need to make sure you have enough vertical space to accommodate the prescription. Most multifocal glasses have a lens height of at least 30 mm.

    However, most manufacturers do not indicate the lens height on the frame. You may also not find this information on the vendors website. In this case, make sure that the lens is specifically designed for multifocal prescriptions.

    Alternatively, contact the vendor to find out if the lenses have sufficient height for your prescription.

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    What Do The Numbers On Glasses Mean

    In this section, we will show you the glasses numbers meaning. These numbers on glasses frames are the measurements that indicate and describe the size of your eyeglasses frames, specifically:

  • The eye size number .
  • The bridge size number .
  • The temple length number .
  • The three numbers mentioned above are the key measurements that describe the glasses measurements of the frames in eyeglasses. For example, you will see three numbers like 51-17-145 at the temple of your glasses. These numbers help the optician to choose the best-fitted frame for your head size and facial features.

    All of these three numbers are measured in millimeters. These variations in frame numbers are fitted by a skilled optician so that it should be best fitted, be comfortable and look good on the appearance. Now, lets look at the meaning of numbers on glasses frames.

    The first number on glasses frames is the eye size. It is the horizontal width of the lenses. In general, the number of eye sizes varies from 40 mm to 62 mm in most of the spectacle frames.

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    The second number is the bridge size. It is the distance between the lenses. Also, it is the bridge that rests upon your nose. Mostly, the size of the bridge on glasses frames would be from 14 mm to 24 mm.

    How Your Glasses Frames Should Fit Your Face

    Patent USD682343

    The top of your frames should be no higher than the line of your eyebrows and the width of the frames should not be wider than the overall width of your face at the temples.

    Getting the right bridge design and position is key to a comfortable fit.

    The lower edge of the frames shouldnt sit on your cheeks, otherwise they might rub or irritate.

    The size should be in proportion to your face. If you have a small face, dont choose large glasses.

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    Find Your Glasses Arm Length

    Go back to your temple measurement and use it as a reference for finding the ideal arm length for your glasses:

    • If your temple width is 129mm or less, choose an arm length between 135mm and 140mm
    • If your temple width is between 130mm-139mm, choose an arm length between 140mm and 145mm
    • If your temple width is wider than 139mm, choose an arm length of 150mm or above

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    What Size Sunglasses Do I Need

    There are plenty of options when it comes to sunglasses. And there are various brands available as well. I can give you size charts but its best if tried in person. And I have already mentioned a size chart which you can follow.

    When you try sunglasses in person, you get the best idea if it fits perfectly in your face. And as long as sunglasses fit you perfectly, thats the right size for you. The perfect size would be, if the sunglasses offer the following.

    • A perfect-sized sunglass will contain a bridge design and position swiftly on top of your nose.
    • The width of temples must be similar to the width of the shape of your face.
    • The upper part of sunglasses should never cross your eyebrows.
    • Lastly, the lower part should not put pressure on your cheek while you wear the glasses. A perfect-sized glass will never cause itching or irritation to your skin.

    Overall, you need sunglasses that can fulfill all the aforementioned qualities.

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