How to Measure Eye Size

By Mary Lougee

Measuring your eyeglass frames correctly allows you to order a replacement frame that will fit your lenses. Frames have four measurements that determine the overall shape and size. The eye size is the width of the lenses; the vertical measurement is the height of the lenses; temple length determines how they sit on your ears; the bridge size accommodates your nose.

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Correct measurements of your frames allow you to replace broken frames and keep your existing lenses.

Step 1

Take off your eyeglasses and fold both temples in. Lay the glasses on a flat surface with the lenses facing up.

Step 2

Place a sheet of paper vertically on the interior of the right lens where it meets the bridge in the center of the glasses.

Step 3

Place a second sheet of paper vertically on the right side of the right lens, aligning it on the widest part of the lens where it meets the frame.

Step 4

Measure the distance in millimeters between the two pieces of paper. This is the eye size for your eyeglass frames.