SofLens Multi-Focal (polymacon) visibility tinted contact lens is a soft hydrophilic contact lens that is a front surface asphere consisting of multiple aspheric zones with a spherical base curve. The most plus power is in the center of the lens, progressing to more minus in the periphery. The lens material, polymacon, is 2-hydroxyethyl methacrylate, and is 38.6% water by weight when immersed in a sterile saline solution.