This Optical Calculator is designed for people dedicated to the optical field (Laboratorians, Optometrists, Salespeople and Ophthalmologists).
You can transpose in a single calculation an Rx either in positive or negative cylinder.
It calculates in a suggested way the Base Curve required for its elaboration of the Rx, but emphasizing that each workshop can handle the same Rx in a different base curve.
Calculate the central and edge thicknesses in different Refractive Indices and Diameters quickly and easily, but with the precision of any lens calculation program on the market.