镜片基弧BC=1/2(角膜水平方向曲率半径HB+角膜垂直方向曲率半径VB)×1.1角膜的弧曲率半径=（1.3375-1）/K值右眼：HB=0.3375/45.86=7.4mmVB=0.3375/44.37=7.6mm左眼HB=0.3375/45.37=7.4mmVB=0.3375/44.25=7.6mm合适的基弧BC=1/2(7.4+7.4)×1.1=8.2
