How do I buy the right eyeglasses size?
First off, there are two components to a good sizing, the look and the fit.
The fit is the less challenging part of the equation, in most cases eyeglasses that feel too loose or too tight can be adjusted by an optician (usually for free even if you aren't a customer) to fit you perfectly. This is also the case for eyeglasses that seem to pull on one side. The optician will warm the frame and adjusted until it sits perfectly on your face.
The right sizing for the look you are going for is a little tricker, but don't let it intimidate you. Most eyeglasses will have 3 measurements on them. They will usually appear in this format:
If your face width measurement is 4.5" (about 11.4 cm) or smaller, you will want a narrow frame.
Recommended lens width: 50 mm and under.
If your face width measurement is between 4.5" and 5.5" (about 11.4 cm to 14 cm), you will want a medium frame.
Recommended lens width: 50 mm to 54 mm
If your face width measurement is 5.5" (about 14 cm) or bigger, you will want a wide frame.
Recommended lens width: 54 mm and up
The bridge size is most important on plastic frames that do not have nose pads on legs. On those frames getting the right nose bridge fit will make the difference between a frame that sits too high or too low on your face, and a frame that fits in the right spot.
We have provided a fourth measurement on most of our item listings (if this listing is missing the vertical number, contact us, we will be happy to provide you with it). The vertical lens measurement is the height of the lens. This measurement is not only important for aesthetics (the look of your glasses) but also in order to give your optician the space to fit in special lenses (such as bifocal or progressive).
Other factors such as frame style might affect the measurements. For example round frames often have smaller lens width and larger nose bridge but might fit someone with average features. Also a thick frame will add bulk to the sizing, so a 52mm lens width with a thin metal frame will fit differently than a 52mm lens width with a thick plastic frame.
If you are in doubt, we can hand-measure a 4th measurement for you which is the total frame width. If you need this measurement, you can email us at [email protected] and provide us with the frame's SKU number found in the full details on the listing, and we will get that measurement for you.