US 12,279,823 B2
Binocular retinal imaging device, system, and method for tracking fixational eye motion
Christy Sheehy, San Francisco, CA (US); Zachary Helft, Berkeley, CA (US); Andrew Norton, Woodside, CA (US); Taylor Page, Suffield, CT (US); Michael Simonsen, Rochester, NY (US); and Yun Hui Ni, Rochester, NY (US)
Assigned to C. Light Technologies, Inc., Medford, MA (US)
Filed by C. Light Technologies, Inc., Berkeley, CA (US)
Filed on Sep. 6, 2023, as Appl. No. 18/243,076.
Application 18/243,076 is a continuation of application No. 17/548,432, filed on Dec. 10, 2021, granted, now 11,779,212.
Application 17/548,432 is a continuation of application No. 16/470,038, granted, now 11,197,607, issued on Dec. 14, 2021, previously published as PCT/US2017/066506, filed on Dec. 14, 2017.
Claims priority of provisional application 62/501,480, filed on May 4, 2017.
Claims priority of provisional application 62/433,952, filed on Dec. 14, 2016.
Prior Publication US 2024/0090764 A1, Mar. 21, 2024
Int. Cl. A61B 3/13 (2006.01); A61B 3/00 (2006.01); A61B 3/10 (2006.01); A61B 3/113 (2006.01); G02B 27/09 (2006.01); G02B 27/14 (2006.01); G02B 27/30 (2006.01)
CPC A61B 3/132 (2013.01) [A61B 3/0008 (2013.01); A61B 3/1025 (2013.01); A61B 3/113 (2013.01); G02B 27/0994 (2013.01); G02B 27/14 (2013.01); G02B 27/30 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A binocular system, comprising:
a binocular scanning laser ophthalmoscope (SLO) comprising:
right eye optics configured to generate a plurality of images a retina of a right eye of a subject, wherein the right eye optics comprise:
a first acousto-optic modulator (AOM) configured to selectively attenuate a first beam of optical radiation;
a first fiber collimator configured to receive the first beam from the first AOM;
a first beam splitter configured to pass the first beam from the first fiber collimator to a first MEMS device and reflect the first beam towards a first detector assembly;
the first MEMS device configured to scan the first beam along a first and second dimension at a scan rate and to de-scan the first beam onto the first beam splitter;
a first lens configured to focus the first beam onto a first mirror and to focus the first beam onto the first MEMS device;
the first mirror configured to direct the first beam towards the first lens and towards a second lens;
the second lens configured to focus the first beam into the right eye of the subject, the second lens further configured to focus the first beam reflected from the retina of the right eye of the subject onto the first mirror; and
the first MEMS device further configured to de-scan the first beam onto the first beam splitter;
left eye optics configured to generate a plurality of images a retina of a left eye of the subject, wherein the left eye optics comprise:
a second AOM configured to selectively attenuate a second beam of optical radiation;
a second fiber collimator configured to receive the second beam from the second AOM;
a second beam splitter configured to pass the second beam from the second fiber collimator to a second MEMS device;
the second MEMS device configured to scan the second beam along the first and second dimension at the scan rate and de-scan the second beam onto the second beam splitter:
a third lens configured to focus the second beam onto a second mirror and the second MEMS device;
the second mirror configured to direct the second beam towards the third lens and a fourth lens;
the fourth lens configured to focus the second beam into the left eye of the subject, the fourth lens further configured to focus the second beam reflected from the retina of the left eye of the subject onto the second mirror;
the second mirror further configured to direct the second beam towards the third lens; and
the second beam splitter further configured to reflect the second beam towards a second detector assembly and
a processor configured to:
determine movement of the right eye based on the plurality of images of the retina of the right eye of the subject;
determine movement of the left eye based on the plurality of images of the retina of the left eye of the subject; and
generate a signal representative of a deviation between the movement of the right eye and the movement of the left eye.