US 12,299,872 B2
Detecting and tracking macular degeneration
Varad Srivastava, Skaneateles, NY (US); and Allen R. Hart, Knoxville, TN (US)
Assigned to Welch Allyn, Inc., Skaneateles Falls, NY (US)
Filed by Welch Allyn, Inc., Skaneateles Falls, NY (US)
Filed on Jun. 14, 2021, as Appl. No. 17/346,454.
Claims priority of provisional application 63/039,665, filed on Jun. 16, 2020.
Prior Publication US 2021/0390692 A1, Dec. 16, 2021
Int. Cl. G06T 7/11 (2017.01); G06T 5/40 (2006.01); G06T 7/00 (2017.01); G06T 7/136 (2017.01); G06T 7/62 (2017.01)
CPC G06T 7/0012 (2013.01) [G06T 5/40 (2013.01); G06T 7/11 (2017.01); G06T 7/136 (2017.01); G06T 7/62 (2017.01); G06T 2207/30041 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A system, comprising:
a vision screening device having at least one sensor; and
a controller operably connected to the at least one sensor, the controller being configured to:
cause the at least one sensor to obtain an image of an eye;
identify, based at least in part on the image, an optic disc of the eye;
generate, at a first location, a first geometric shape approximating the optic disc, the first geometric shape having a dimension;
identify, based at least in part on the image, a region of interest exclusive of the optic disc, wherein:
the region of interest is represented by a second geometric shape disposed at a second location different from the first location, and
the second location of the second geometric shape is determined based at least in part on the dimension of the first geometric shape;
identify, based at least in part on the image, drusen disposed proximate a macula of the eye and at least partially within the region of interest;
determine a value indicative of a characteristic of the drusen; and
generate an alert based at least in part on the value exceeding a threshold.