Method of cast molding toric contact lenses

A method of cast molding a toric contact lens including a posterior toric central zone having a cylindrical axis, and an anterior lens surface forming a ballast that has an axis of orientation offset from said cylindrical axis at a selected rotational angle, said method comprising:

• providing anterior and posterior mold sections including respective anterior and posterior mold cavity defining surfaces, wherein the posterior mold cavity defining surface includes a toric central zone and the anterior mold cavity defining surface is shaped to provide the ballast, said mold sections being alignable at multiple rotational positions;
• adjusting rotational alignment of the anterior and posterior mold sections with respect to one another to align the mold sections at a rotational position corresponding to said selected rotational angle, and assembling said anterior and posterior mold sections at said corresponding rotational position to form a lens-shaped molding cavity therebetween, and
• curing a polymerizable lens-forming mixture in the lens-shaped cavity of the assembled mold sections to form the toric contact lens.