Patent ID: 10956735

Abstract:
A system for determining a refractive error from a red reflex image of the eyes of a subject by analyzing the red reflex image of the subject using deep learning and clustering algorithms is provided. The system (i) predicts a probability map for each of sixteen eye landmarks on a contour of an iris of the eye, (ii) determines a location of an eye landmark on the eye-region image, (iii) determines a circular mask of the iris, (iv) extracts an iris region image between the circular mask of the iris and the eye-region image, (v) generates a plurality of clusters by identifying a similarity between pixels of the iris region image, (vi) determines a crescent of the red reflex in the iris, (viii) predicts a pupil radius, (ix) determines a width of the crescent, and (x) determines a power in each eye by computing a width of an anti-crescent, eccentricity of an image capturing device, a working distance of the image capturing device.