Methods and system to identify position, rotation, and tilt of a contact lens on an eye

A method of identifying and correcting for any misaligned position and/or misaligned rotation of a contact lens disposed on an eye, comprising:

• (a) determining a prescription of a trial contact lens on an eye by making dynamic measurements of an eye's visual aberrations with a combined optical aberrometer/topographer optical instrument;
• (b) determining an optimal pupil size;
• (c) determining the pupil's center and radius;
• (d) determining an Iris' center and radius;
• (e) determining the contact lens center and radius using predefined fiducial marks on the contact lens;
• (f) performing modal and/or zonal wavefront sensor analysis and calculating Xernike polynomial coefficients that define a family of wavefront aberrations;
• (g) filtering out outliers (blinks);
• (h) generating a 2-D wavefront contour map showing a distribution of wavefront aberrations across the eye;
• (i) converting the 2-D wavefront contour map into a 3D wavefront guided contact lens thickness correction profile;
• and
• (j) using the WFG corrected thickness profile to fabricate a wavefront-corrected contact lens by taking into consideration any XY mis-alignment and/or mis-rotation of the contact lens.