Frame Size Guide

If you didn't already know, glasses come in multiple sizes where dimensions and proportions can change from brand to brand or even rely on frame shape.

SIZING EXPLAINED

There are three main measurements when it comes to frame size: Lens width, Bridge width and Arm length.

Lens width is the most important measurement as it dictates how your eye sits within the lens. As a result, opticians commonly refer to lens width as the glasses 'Size'. With 49 mm sitting as an average lens width, frames in sizes 40mm to 48mm will look more petite and tailored on a medium face whilst frames in sizes 55 to 58mm will have a bigger, oversized look.

FIND YOUR CURRENT FRAME SIZE

If you already wear glasses, you will be able to find the measurements of your glasses on the inside of the frame arm or sometimes on the side of the nose pad. All measurements are in millimetres (mm).

The numbers, i.e. 47◻21 145 indicate the followings:

47 is the Lens width. Usually a 2 digit number in the 40-62mm range.
21 is the Bridge width, the distance between lenses. Usually a 2 digit number in the 14-24mm range.
145 is Arm length. Usually a 3 digit number in the 110-150mm range.

HOW YOUR FRAMES SHOULD FIT

The bridge of the frame should sit on your nose bridge without any gaps. If you find that there is a gap between your frame and your nose, you will need to have your glasses adjusted.

Metal Frames: The hinges of the nose pads are easily adjustable however you should leave this to the professionals. Visit your local opticians who can adjust your frames, usually without a charge.

Acetate Frames: With acetate frames, adjusting the nose area is difficult.This is why it is strongly recommended that you visit your local opticians to try on the frames before you proceed with purchasing them online.