BASIC DESIGN INTENDED FOR GENERAL USE
This is a basic PAL Design intended for general use. The distribution of power is smooth and well balanced and guarantees good performance in any environment. Unwanted astigmatism is reduced to the minimum and pushed to the parts of the lens that are, most of the times, beveled out. It is easy to sell for the practioner, as it completely complies with the prescription. Calculation is based on nominal power.