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    Segment Height Measurement

    The "Seg" height is the distance from the bottom of the lens to your pupil.
    We use this to determine how to make progressive, bifocal, and trifocal lenses.

    Segment Heigh Measurement Step 1

    Step 1

    Put on any pair of clear eyeglasses.
    Face the camera directly.
    Snap a picture.

    (It helps to be close up to the camera, and in a well-lit area.)

    Segment Heigh Measurement Step 2

    Step 2

    Email the photo to customer service with the frame size information.