What Do The Numbers On My Glasses Mean

The second number indicates the bridge width or the distance between the lenses. The first number ex 54 the width of the lenses. These numbers describe the size of your eyeglass frames specifically.

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What Do Those Numbers Mean On The Inside Of Eyeglass Frames

Get To Know What All The Numbers Mean On Your Frames Glasses

What Do Those Numbers Mean On The Inside Of Eyeglass Frames

What Do These Tiny Numbers On The Inside Of My Glasses Mean Learn

What Do Those Numbers Mean On The Inside Of Eyeglass Frames

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The key measurements that describe eyeglass sizes are the eye size bridge width and temple length.

What do the numbers on my glasses mean. The front measurement includes the diameter of the lens and the width of the bridge measured in millimetres and usually separated by a small dash or rectangle e g. Your size may look something like 49 21 145. The next number in the sample eyeglass prescription is 0 50. 1 generally a minus sign indicates a negative powered lens that is used to correct nearsightedness.

The third number or the temple length tells you how long the arms of the glasses are. To find the perfect fit you can take your own measurements or have them taken by an optician. The third number ex 140 the length of the temple arm including the portion going behind the ear. These numbers usually appear on the inner surface of one of the frame temples the long stems of the frames that hold your glasses in place behind your ears.

The number 90 corresponds to the vertical meridian of the eye and the number 180 corresponds to the horizontal meridian. If you re a glasses wearer you may notice some numbers on the arms or the bridge. The numbers 55 18 145 in millimetres displayed in this image indicate the following 55 mm will represent the width of the lens. A positive sign indicates a positive powered lens used to correct farsightedness.

If an eyeglass prescription includes cylinder power it also must include an axis value which follows the cyl power and is preceded by an x when written freehand. The numbers beneath the frames reflect the size measurements in millimeters mm. If you already wear glasses it s easy to find this information. The first number in the sequence refers to the width of the lens 50 20 150.

The axis is defined with a number from 1 to 180. These numbers usually include the frame model colour code and measurements as illustrated. The first number will be the eye size which measures the width of 1 lens. There are three numbers printed on the inside of the temples.

Ready to shop for your perfect fit. But what does it all mean. Check out our infographic below to learn how to decipher your glasses size. The second number ex 15 the distance between the lenses.

The sphere number indicates nearsightedness or farsightedness.