Abstract: Provided herein is a predictive analytics tool used for the optimization of vision quality in a subject. The tool uses at least one of an optical quality index of a total eye, an optical quality index of a cornea or a dysfunctional lens index as preoperative conditions input into the tool. The output is a type and at least one outcome of a technology performed on an eye of the subject. A correlation between measured data of preoperative conditions from the cloud library and the input data of preoperative conditions for each component of pre-op conditions is calculated to enable recommendations by a doctor.

Abstract: Provided herein are methods for objectively determining a visual axis of an eye. An optical axis of a measuring instrument is aligned with an unambiguously determinable axis of the eye which is the pupillary axis crossing the vertex of an anterior surface of a cornea and perpendicular to the vertex. A wave front tilt of radiation of a set of narrow laser beams backscattered from the retina is calculated as a tilt component in a polynomial that describes the wave front. The visual axis is reconstructed from a set of chief rays exiting from the eye after crossing nodal points of the optical system of the eye.