Before you begin, ensure you have the following information ready:
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: Match the width, bridge size, and temple length of a current pair of well-fitting glasses. Step-by-Step Purchase Guide Before you begin, ensure you have the following
: This is the distance between your pupils in millimeters. It is critical for aligning the lens center with your vision. If it's not on your prescription, you can measure it using a ruler or tools like the Zenni Optical PD tool . Before you begin