Oyster

It is fundamental to know the measurement of your frame before you buy eyeglasses. Don't worry, we will help you out to find your best fit.

Understand Frame Measurement

Do you already have a pair of glasses handy? Check the inner side of the temples, you will find 3 different numbers. Example: 52-17-136, the first number indicates lens width, the middle number indicates bridge width while the last number indicates the temple size. In case there is a fourth number, it will indicate the lens height.

Frame Dimension

• Lens width: 40 mm - 60 mm
• Bridge width / Nose bridge: 14 mm - 24 mm
• Temple arm / Temple size: 120 mm - 150 mm

In case, you are measuring in inches: 25.4 mm = 1 inch

Sizing Information for Perfect Fitting Frame

The frame size can be calculated with the help of eye size / lens width. Usually the size is divided into S (small), M (medium) and L (large).

• 40 mm - 50 mm
• 51 mm - 54 mm
• Above 55 mm

Learn more about frame measurement.