Patent ID: 9665771
Date: 2017-05-30
CPC Classifications: A61B,G06K

Claim:
1. Method for measuring aberrations of an ocular optical system, comprising the steps of: lighting a retina of a patient; detecting a light portion reflected by the retina, through a sensor comprising at least a prism adapted to split the pupil image in three or more sub-pupil images; acquiring said sub-pupil images; processing said acquired images so as to obtain first order partial derivatives of a wavefront generated by the ocular optical system; and reconstructing said wavefront through an algorithm for direct numeric integration of said partial derivatives, and/or of obtaining a map of values from said partial derivatives, each of said values being representative of a local refracting error of said ocular optical system, wherein W(z, ρ) is the wavefront, where z represents a visual axis of the ocular optical system and ρ represents a polar coordinate, and the local refracting error is calculated according to the following formula: