Eyewear buy Direct

The Size of Eyeglasses

The easiest and fastest way to find the right size glasses for you is to use your current glasses as a benchmark. Once you know the size of your current glasses, you have a frame of reference for a new pair of glasses.A glasses 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 more than one size: for example 49-17-133, and 51-17-135, and 54-18-140. Searching a range of sizes is important because it vastly increases the number of results you will get, and also the difference in sizes will be almost unnoticeable compared to your current eyeglasses.

Glasses frames have four basic measurements: the eye, bridge, and temple measurements.
The eye size refers to the horizontal width in millimeters of one of the frames lenses. The measurement is taken from the inside of one side of the frame to the inside of the other side of the frame. The lens is measured from its furthest point, where it would intersect with a vertical line. The bridge measurement is the distance in millimeters between the two lenses. It is measured between the two closest points of the two lenses.

The temple length is measured along the length of the temple, from one end to the other, including the bend. Many frames are constructed with an endpiece that extends from the frame front back along the line of the temple. This backward extension of the frames endpiece could be as little as 2mm, or as much as 15mm. When the endpiece extends further back, the temple length tends to be smaller to compensate. As a result, if you are accustomed to a 145mm temple length, a 135mm temple could work perfectly for you if your new frame has an endpiece that extends back 10mm. This is also the case with many sunglasses with a wrap design. The wrap has the effect of bringing the frame front back towards the ears, thereby requiring shorter temples lengths to compensate.

When you have found a pair or two that meet the size requirements take a look at the numbers on the frame, usually found on the temple or price tag. The frame and nosepiece width are listed together in centimeters. For example, 54/18. The temple length is listed separately (e.g. 140). These numbers will tell you approximately what size you should be looking for and will help narrow your search more quickly.