Patent ID: 8579437
Filing Date: 2013-11-12
Classification: A61B,G01J

Abstract:
1. A machine comprising: a sequential wavefront scanner; a variable aperture; a position sensing device; an electronic control and detection system coupled to the sequential wavefront scanner and the variable aperture, with the sequential wavefront scanner configured to shift an incident wavefront, returned from the retina of an eye, by selected a selected displacement in a first and a selected displacement in a second dimension, where the incident wavefront is returned from a spot on the retina of an eye illuminated by a narrow beam of light, and with the variable aperture positioned to intercept and to select a portion of the incident wavefront, shifted by the sequential scanning device, to be directed to a position sensing device; and where the electronic control and detection system is configured to control the sequential wavefront scanner to shift the incident wavefront by a set of displacements selected to form a selected scanning pattern to scan the incident wavefront and configured to vary the aperture size to vary detection resolution at different parts of the scanning pattern.