You can look at or measure your old pair of glasses to get the dimension which fits you the best. By having these numbers, you can easily find the closest match in our website. Eye Size - refers to the horizontal width in millimeters of one of the frame's lenses.Bridge Size - measurement is the distance in millimeters between the two lenses. It is measured between the two closest points of the two lenses.Temple Size - is measured along the length of the temple, from one end to the other, including the bend.Vertical Size (B) - refers to the vertical height of an eyeglasses lens, and is measured from the tip to the bottom of the lens aperture of the frame. The measurements are taken from a horizontal line intersecting with the top of the lens, to the horizontal line intersecting with the bottom edge of the lens. The B measurement is only important when ordering multifocal lenses; follow this link to read more about progressive lenses.
Just look into the inside of the temple of your current sunglasses. The frame size is on the inside of one temple which includes frame height, lens width and bridge width. If your sunglasses is broken and you can't find the size on the temple, then you can go to your doctor to let him measure for you.
Step 1: Prepare a metric ruler
Get a metric ruler that is capable of measuring millimeters, the universal unit of measurement set by worldwide frame manufacturers and opticians.
Step 2: Place the frame properly
Place the frame on a smooth table or level surface. It is acceptable whether the arms are closed or open.
Step 3: Align the ruler and make measurements
Align the starting end of the ruler with the one side of the eye rim at the outer edge, and measure the distance to the other side of the eye rim. The bridge length can be measured in a similar way.
Step 4: Measure arm or temple
It is necessary to measure the length to the bend and the length of the drop respectively.
At some online optical shops, customers are required to provide the frame sizes according to personal facial size. This is the necessary information for opticians to fit a pair of comfortable glasses.