What term refers to the point around which a pattern rotates during edging?

The term that refers to the point around which a pattern rotates during edging is known as the Rotational Center. This ensures that the lens is accurately shaped according to the specified design and maintains the intended alignment and positioning when being cut. Understanding the concept of a rotational center is crucial for opticians because it directly influences the quality and precision of the finished lens, ensuring it fits correctly within the frame and aligns properly with the wearer's eyes.

This concept is pivotal in the edging process, as any deviation from the rotational center can lead to inaccuracies in the lens that may affect visual clarity and comfort for the wearer. Knowing where this point lies helps in making adjustments and optimizations during lens fabrication.