What term describes the surface that attaches to the lens to secure it during the surfacing process?

The correct term for the surface that attaches to the lens during the surfacing process is "Block." In the lens finishing and surfacing procedure, a block is a small piece or surface applied to the back of the lens, allowing it to be held securely in place while the desired prescription and shape are ground into the lens. The block ensures proper alignment and stability as the lens undergoes various grinding and polishing steps, preventing any movement that could lead to inaccuracies in the final product.

Understanding this concept is essential for opticians because it plays a crucial role in ensuring that the lens is manufactured correctly and meets the precise visual needs of the wearer. The use of blocks is a common practice in the optical industry, highlighting their importance in achieving high-quality lens fabrication.