US 11,717,153 B2
Medical devices, systems, and methods for performing eye exams and eye tracking
Alexander C. Walsh, Los Angeles, CA (US); Paul G. Updike, Cerritos, CA (US); and Richard Castro, Santa Monica, CA (US)
Assigned to Envision Diagnostics, Inc., El Segundo, CA (US)
Filed by Envision Diagnostics, Inc., El Segundo, CA (US)
Filed on May 1, 2017, as Appl. No. 15/583,780.
Claims priority of provisional application 62/330,059, filed on Apr. 30, 2016.
Claims priority of provisional application 62/333,112, filed on May 6, 2016.
Prior Publication US 2017/0332899 A1, Nov. 23, 2017
Int. Cl. A61B 3/113 (2006.01); A61B 3/10 (2006.01); A61B 3/14 (2006.01); A61B 3/15 (2006.01); A61B 3/12 (2006.01)
CPC A61B 3/102 (2013.01) [A61B 3/10 (2013.01); A61B 3/1005 (2013.01); A61B 3/113 (2013.01); A61B 3/14 (2013.01); A61B 3/154 (2013.01); A61B 3/1216 (2013.01); A61B 3/152 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of detecting an eye gaze direction or eye position, the method comprising:
performing at least two OCT B scans, each OCT B-scan including at least a portion of an iris and at least a portion of a pupil of an eye;
determining a location of at least three pupillary border points between said iris and said pupil of the eye based on the OCT B-scan;
determining a function based on the at least three pupillary border points, wherein determining a function comprises fitting a function to the at least three pupillary border points; and
calculating an eye gaze vector based on the function.