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To calculate the glasses frame size, add the lens diameter, the bridge width, and the temple length. Then divide the sum by 3.

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Enter the lens diameter, bridge width, and temple length into the calculator to determine the glasses frame size. This calculator can also evaluate any of the variables given the others are known.

A glasses frame size refers to the specific measurements that determine the fit of the eyeglasses on the wearer's face. It typically includes three main dimensions: lens width (the width of one lens), bridge width (the distance between the two lenses), and temple length (the length of the arm piece). These measurements ensure that the glasses fit comfortably and securely on the wearer's face, providing optimal vision correction and comfort.