Sizing & Advice

How to choose the correct size glasses for your child

The tables below are an approximate guide so that you can obtain the right size glasses for your child.

Child's Age (Years) Frame Size
0 - 1 35 to 37
1 - 2.5 37 to 38
2.5 - 4 40 - 42
4 - 7 43 - 45
7 - 10 45 - 47
10 - 16 47 - 52
Child's Pupil Distance(mm) Frame Size
42 to 48 37 to 38
48 to 52 40 to 42
53 to 55 43 to 45
56 to 58 45 to 47
58 to 62 47 to 52

The pictures below details how the frame size correspond to the different dimensions of your child's glasses. The two core frame dimenstions are always stated as two numbers.

For example size 42-15 this would correspond to the size dimensions shown below. It is important to understand the size dimensions for glasses this will help you to ensure that you pick the correct frame size your child.

Image result for pupil distance to frame size chart

Image result for pupil distance to frame size chart Image result for pupil distance to frame size chart Image result for pupil distance to frame size chart

Size 42-15 shown above as an example

Already wearing glasses?

If your child is already wearing glasses you will be able to check the size of their current frames by reading the labelling within the frames - below is an example.

How to find the Pupil Distance of your child

The Pupil Distance (PD) is used to locate the optical centre in the lenses.The PD is sometimes written on the prescription.

The reason it is important to measure your child's Pupil Distance is to ensure that their frame and lenses align with the optical centre of their eyes. This ensures that they have the best viewing experience with their glasses.

You can follow the steps below to measure your child's PD with a millimeter (mm) ruler at home.

1. Stand about 8 in. (20cm) away from your child.

2. Place a millimeter ruler up against their eyes, put it on the bridge of their nose.

3. This measurement is only accurate if your child is looking straight ahead.

5. Read the mm mark on the ruler that shows the distance between the centre of your child's eyes. This number is their distance PD.

7. Repeat these steps 2 or 3 times to make sure your measurements are accurate and consistent