The goal of choosing a lens blank is:

• A. To choose the smallest lens blank possible that will still fit into the frame
• B. To minimize cost regardless of fit
• C. To maximize weight
• D. To select the largest blank that the frame will accept

Answer: (A)

In selecting a lens blank, the aim is material efficiency without compromising fit and finish. Choosing the smallest blank that will still accommodate the finished lens within the frame minimizes waste and weight, which also helps reduce cost and keeps edge thickness reasonable. A larger blank adds unnecessary material and weight without providing any optical or fit advantage. Of course, the blank must be large enough to produce the required lens size and beveling, so ensure the frame and prescription can be finished from that blank.