What does it mean for glasses/sunglasses to fit perfectly? I METRONOME Staff

Hello, I'm Yamada from METRONOME Tokyo Online, the official Japanese online store for METRONOME DESIGN INC., which sells METRONOME®, an eyewear brand founded in London.

Well, today I'll be talking about the subject in the title. The size of your glasses/sunglasses is something you're very curious about, but it can be a little confusing. If the frame is adjustable, you can have it adjusted at an optician's or other place, called a fitting, and it will be adjusted to fit your face.

On the other hand, it is also true that there are many cases where the wearing comfort is not a problem even without fitting. As for the eyeglasses/sunglasses sold in our shop, there are generally very few cases where the glasses/sunglasses are so ill-fitting that they cannot be worn. (Of course, there are exceptions.)

So, I would like to write about what you should pay attention to when choosing glasses/sunglasses, and what it means for them to fit perfectly.

First, to determine the size, you need to check the lens width and bridge width of the frame and compare them with the size of your face.

It is also important to be aware of the "PD (Pupillary Distance)." This is the distance between your eyes, measured from the center of your eyes when looking straight ahead. When choosing glasses/sunglasses, what is the ideal condition?

The center of the eye is at the center of the lens.

This means that it is the exact center, including the vertical and horizontal widths.

For example, the distance between the centers of my eyes is about 65mm (measured by myself with a ruler) . In this case, the way to choose glasses/sunglasses is as follows:

Choose a frame with a lens width and bridge width as close to 65mm as possible.

There is a need for this. The reason is as follows:

1. Ideally, the lens should be aligned with the center of your eye.
2. Therefore, it is necessary to know the distance between the centers of the left and right lenses of the eyeglass frame.
3. The formula for calculating whether a frame matches your PD is: lens radius + bridge width + other lens radius = frame PD.

To put it simply, you just need to check here to see if the lens width and bridge width are close to your PD .

When I was thinking about wearing the Trad Lily, I looked at the size of the Lily,

Temple rope 1: Lens width 46
2: Bridge width 24
3: Temple length 162
4: Lens height 41

So, going by the calculation above, it comes out to 46mm + 24mm = 70mm. My PD was just under 65mm when measured with a ruler, so it's probably actually larger. That means the difference between my PD and Lily's size is about ±2mm, so it's a perfect fit. (Maybe I should post a picture of myself wearing them...lol)

The smaller the discrepancy, the more accurate the fit, but if it is too far off, adjustments will be necessary or it will be better not to purchase it.

Let's reorganize how to check the size...

1. Stand in front of a mirror and measure the distance between the centers of your eyes (PD) with a ruler or similar.
2. Check the "lens width" and "bridge width" of the frame you are considering purchasing.
3. Compare PD with frame size (lens width + bridge width)
4. The ideal is ±2mm. As long as it's not too far off, there's no problem wearing it.

That's how it is.

By the way, when it comes to measuring your PD (Pupillary Distance), using a ruler is merely a simple method. If you wear glasses with prescription lenses almost every day, we strongly recommend having your eyes examined and measured at an optician.

If you are only using it as eyewear to decorate your face, a slight misalignment will not be a problem. We would appreciate it if you would check the size depending on how you will use it.

If you have already measured your PD and are wondering if there are any METRONOME frames in your size, please feel free to contact us! We would be happy to introduce you to some.

Staff OKD is still learning.

Well then.

OKD↓