If the prescription is on the back, does the negative curvature to the corneal curvature cause the lens to rotate into place? I realize their is weighting on the bottom of the toric lens, but is this just to get it in to the approximate position? And then the curvature that matches the cornea causes it to rotate exactly?
Read more: Are the prescription of toric soft contacts on the front (part that touches the eyelid) or back of the lens (part that touches the cornea)?