Fitting the perfect eyewear to you.
There is no one "right size" of glasses. Your face can accommodate a wide variety of glasses sizes and many eyewear frames will work for most people.
"Size" in glasses is a completely different concept than "size" in clothing or footwear. As a result, your focus should be on how the glasses look on you; when we find glasses that look good, usually the glasses can be adjusted to fit your face.
Glasses size
An eyewear or sunglasses frame model is usually available in just one "size", meaning one combination of eye, bridge, and temple lengths. Occasionally a glasses frame may have multiple sizes: for example 50-17-135, and 52-17-135, and 54-18-140. These measurements specify the proportional dimensions of the frame.
Measurements
Glasses frames have four basic measurements: the lens width, bridge, temple, and lens height measurements.
The
Lens Width (eye size or A measurement) refers to the horizontal width in millimeters of one of the frame's lenses.
The
Bridge Width measurement is the distance in millimeters between the two lenses.
The
Temple Length is measured along the length of the temple, from one end to the other, including the bend. Please note, in sunglasses with a wrap design, the wrap curve has the effect of bringing the frame front back towards the ears, thereby requiring shorter temples lengths to compensate.
The
Lens Height (or B measurement) refers to the vertical height of an eyeglasses lens.
The B measurement is only important in regards to bifocal, trifocal, or progressive lenses.