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Reading Glasses Size Guide

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Reading glasses come in all shapes and sizes, so finding the right frame size for your glasses is just as important as choosing your favourite style, colour and the correct power you need.

Your reading glasses should be a comfortable fit around the temple and ears, sit easily on the bridge of your nose and your eyes should be aligned with the centre of the lenses to ensure you are getting the maximum benefit from your glasses.

Reading glasses measurements

All i-perfect reading glasses have measurements relating to the lens width, bridge width and temple length, so these numbers will give a very good guideline to the size of the glasses.

An example of this is from our Antigua glasses, one of the best selling models at i-perfect with measurements of 50 - 21 - 132.

The first number is the lens width, which is the key measurement as this shows the width of one of the lenses and gives the best indication of the total width of the frame.

The other numbers relate to the bridge width (distance between the lenses) and the temple length (length of the arms). 

The lens width can vary between 42mm and 59mm and we have used this to prepare this useful at-a-glance reading glasses siz guide to some of the best selling models in the I-Perfect range.

Small/Narrow Faces​

Model Measurements
Colombia reading glasses Colombia  42 - 18 - 125
Boston reading glasses Boston  47 - 18 - 132
Picasso 46 - 18 - 130


If you have a small or narrow face, then a pair of glasses that is too large or too wide will not sit comfortably on the bridge of your nose and will provide an irritation when they slip down.

It is therefore important to select a suitable pair of glasses that will provide a snug fit, and an excellent recommendation for smaller faces is Boston. This model has a lens width of 47mm and is one of the most popular styles in the i-perfect range.

Boston offers a classic design with a silver, spring-hinged metal frame and a half eye lens. The style is  suitable for both men and women and they are perfect for everyday use.

Very small reading glasses

Another option is Colombia, which is probably the smallest model that i-perfect provides with a lens width of just 42mm combined with a bridge width (the distance between the lenses) of 18mm. The temple length (length of the arms) is also very short at just 125mm.

All Colombia models include a complimentary case, and the style is available with a gold, silver or black frame.


Medium faces:

Model Measurements
Antigua  50 - 21 - 132
Milan reading glasses Milan  51 - 17 - 137
Washington  52 - 18 - 132

The majority of I-Perfect models will fall into this category, so readers with a medium sized face can choose from any number of customer favourites including Antigua, Milan, Washington and Trinidad among others.


Wide faces:

Model Measurements
Verona reading glasses Verona  54 - 18 - 129
Virgina  55 - 14 - 138

 59 - 18 - 129


If you have a wider face, then a pair of reading glasses that is too small will provide an uncomfortable fit and your eyes may not be looking through the centre of the lens.

Virginia is a new style from i-perfect, and with a lens width of 55mm this is a great model for slightly wider faces with a fresh and contemporary style.

The blue and black frame is manufactured from high quality polycarbonate, so these glasses are very strong and suitable for both men and women.

One of the largest models in the I-Perfect range is Texas, and these glasses have a lens width of 59mm as well as a very large field of vision. They are available in either silver or gold with a high quality, spring-hinged metal frame.

Temple length

The temple length gives the length of the frame in mm, and will be between 130mm and 140mm on most models in the i-perfect range.

Some models have much longer arms, such as Jamaica reading glasses which have a temple length of 147mm. Jamaica reading glasses also have a much smaller, half-eye lens so they are perfect for balancing on the end of your nose!

This measurement is important to make sure that the glasses fit comfortably behind your ears.

Browse our full range of reading glasses for all of our latest styles, and with all frame sizes catered for you should be able to find the best reading glasses for you.

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