Show in inches | mm
A frame has 4 basic frame sizes ( eye, bridge, temple, vertical ):
Eye Size(A)Horizontal - refers to the horizontal width in millimeters of one of the frame's lenses.
Bridge Size(DBL) - 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.