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How to Read Numbers on Prescription Glasses

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Knowing how to read your eyeglasses size will help yous find the best fit, especially when shopping for glasses online. Your glasses size is made up of 3 numbers that indicate measurements in millimeters, such as "45 20-135." The starting time number will exist the eye size, which measures the width of ane lens. The second number indicates the span width, or the distance betwixt the lenses. The tertiary number, or the temple length, tells you how long the artillery of the glasses are. To detect the perfect fit, you can have your own measurements or have them taken by an optician. Employ your measurements to discover a comfortable and flattering pair of eyeglasses with the perfect fit!

  1. ane

    Look for a serial of numbers on the within of your glasses. The measurements should be printed in a small font on the inside of the temple, the bridge, or the earpiece.[1] Your glasses' manufacturer may likewise group in extra information with the measurements, such as words and or symbols, but you only need the 3 principal numbers to determine your size.

    • Different manufacturers write out measurements slightly differently, which can make reading the measurements seem daunting, but just remember to await for the serial of 3 numbers. For case, the aforementioned measurement could be written "Brand Model 45/20 135," "45-twenty-135," or "45 20-135."
    • Any words or numbers grouped together with capital letters, such as "ESJ-213" or "O17," represent the frame style or color. Don't worry about these, since they aren't relevant to the size measurements.

  2. 2

    Find the starting time 2-digit number to read your heart size. This number measures the width of ane lens, spanning the distance at its widest point. Your eyes size is the only measurement that falls between 40 to 60 millimetres (1.half-dozen to 2.iv in), so you tin use this range to ensure that you're reading the right number.[2]

    • For example, if your measurements are "45 20-135," your eye size would be 45 millimetres (1.eight in).
    • For bifocals and progressive lenses, manufacturers will often break downwardly the lens width and superlative into separate measurements.

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  3. three

    Locate the second ii-digit number, or the bridge size. Your bridge size measures the office of your glasses that goes across your nose and connects the two lenses. In the series of three numbers, your bridge size will be the only number that falls between 14 to 24 millimetres (0.55 to 0.94 in). It may be printed direct after the eye size, or it might be separated by a small box symbol or a slash.[3]

    • For example, if your measurements read "45 20-135," your bridge size would be twenty millimetres (0.79 in).

  4. iv

    Find the 3rd number, which measures your glasses' arm length. The arm length measures the pieces that extend back to residual over the ears. This measurement will be the only iii-digit number falling somewhere between 120 to 150 millimetres (iv.7 to 5.9 in), and sometimes it may exist separated from the other two measurements past a dash, extra space, model number, or color number.[4]

    • For example, if your measurements are "45 20-135," your temple length would be 135 millimetres (5.3 in).
    • Some of the about mutual arm measurements include 135 millimetres (5.3 in), 140 millimetres (5.5 in), 145 millimetres (five.7 in), and 150 millimetres (five.nine in).

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  1. 1

    Take your ain measurements if y'all tin can't detect them on your glasses. If your measurements are missing or rubbed off from article of clothing, yous can still employ a ruler with millimeter measurements or a fabric measuring tape to find them yourself. Take off your glasses and mensurate carefully, making sure to write each measurement downwardly as you get.[5]

    • Measure horizontally across one lens at its widest bespeak to detect your lens width.
    • Identify the ruler over the top of the spectacles and measure from the inner edge of one lens to the other to detect your bridge size.
    • To find your arm length, measure from one of the arm hinges to the point where the arm begins to curve to fit over the ear.
    • If you lot have trouble finding your measurements, you lot can also take an optician have them for you.

  2. 2

    Use your current pair of spectacles as a size reference. If you like the way your electric current glasses fit, then go ahead and stick with that size. If you discover that your glasses slide effectually, press into your temples, or pinch you, try some pairs with slightly dissimilar measurements.[6]

    • For example, if your glasses continue slipping down your nose, your bridge width may exist too wide. Look for a pair with a shorter span measurement.
    • If your spectacles pinch your olfactory organ or the sides of your head, they are probable too modest. Choose a new pair with higher measurements for a better fit.

  3. 3

    Try on a variety of glasses to see what works with your face. Every face shape is unique, so these measurements may not perfectly signal how well the frames volition fit or suit your face shape. Experiment with a variety of shapes and sizes at a glasses shop or through a effort-on service to see what works all-time.

    • This is peculiarly important when purchasing high-way frames. Their measurements ofttimes differ from standard eyeglasses styles, so it's important to try them on before you make your buy.

  4. 4

    Make certain your eyes are centered in the width of the lenses. When in incertitude, follow this archetype rule.[vii] If the frames are too wide, they'll brand your eyes expect also close together. Frames that are too small will make your eyes expect farther apart.

    • Choose spectacles that are slightly wider than your face for the most flattering outcome.
    • If there'south more than a finger'southward width of infinite between the temple of the glasses and the side of your face up, the spectacles are probably likewise wide. Instead, await for a pair with a smaller center size.

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How to Read Numbers on Prescription Glasses

Source: https://www.wikihow.com/Read-Eyeglasses-Size