How to know your eyeglasses size ?

How to choose the right size for your glasses ?

Choosing eyewear can sometimes be complex, as there are so many parameters to consider.
Among the key criteria, perfect ergonomics must be allowed by glasses fitting the face perfectly.
It is therefore essential to know how glasses are measured and how to choose the right size.

The main dimensions of a pair of glasses

Pairs of glasses consist of a frame and lenses of varying sizes.
Four key dimensions must be taken into account to define the size of a pair of glasses.
The first measure concerns the nasal bridge, which is joining the two lenses over the nose.
Its width is measured in millimeters and must be perfectly adjusted to the face.
Then, there's the temple length also measured in millimeters from the screw to its end behind the ear.
And there are lenses whose width and height represent essential dimensions in optical correction.
All these measures can differ from one pair of glasses to another.

How to select the right eyewear size for you ?

Your old glasses can be used as a yardstick if they fit you well.
The measures you need are usually written on the frame.
The inscriptions appear most often on the inside of one of the temples.
From the left to the right, you'll find the eye size, the bridge width and then the temple length.
If you do not yet own glasses, your facial measures can be easily taken.
Three main sizes are usually distinguished in eyewear : small, medium and large.
This measure can be assessed using the credit card technique.
To do so, simply place the card vertically on your nasal bridge under the eyebrow.
Then your size will depend on where the end of the card reaches.
The lower the card goes on your face, the closer you get to a small eyeglass size.
However, to ensure that you choose the right size of glasses, it is best to consult an optician.
The professional is best placed to determine the right pair of glasses for you based on your precise measurements.

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