The EASY TORIC CALCULATOR is a simple vector-calculator that assist the surgeon (ophthalmologists) in estimating the amount of postoperative corneal astigmatism to be corrected by selecting the recommended Toric IOL, and determining the optimal axis location of the IOL in the capsular bag. * This application is to assist cataract surgeons (ophthalmologists) in planning toric IOL implants, avoiding doing manual calculations. * The EASY TORIC CALCULATOR calculates the crossed corneal astigmatism (regular with 90 +/- 5 axis diference) with respect induced astigmatism incision during the procedure of cataract lens removal. ***** THIS APPLICATION IS FOR REFERENCE ONLY *****