US 12,340,532 B2
System and method for obtaining profile of eye lens capsule
Paul J. Missel, Fort Worth, TX (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on May 11, 2023, as Appl. No. 18/315,591.
Application 18/315,591 is a continuation of application No. 16/905,693, filed on Jun. 18, 2020, granted, now 11,688,093.
Claims priority of provisional application 62/950,412, filed on Dec. 19, 2019.
Prior Publication US 2023/0281856 A1, Sep. 7, 2023
Int. Cl. A61B 3/00 (2006.01); A61B 3/10 (2006.01); A61B 3/117 (2006.01); A61B 3/14 (2006.01); A61F 2/16 (2006.01); A61F 9/007 (2006.01); G06T 3/00 (2006.01); G06T 7/62 (2017.01)
CPC G06T 7/62 (2017.01) [A61B 3/0025 (2013.01); A61B 3/1005 (2013.01); A61B 3/1173 (2013.01); A61B 3/145 (2013.01); A61F 2/16 (2013.01); A61F 9/007 (2013.01); G06T 3/00 (2013.01); G06T 2207/30041 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A system comprising:
a controller having at least one processor and at least one non-transitory, tangible memory on which instructions are recorded for executing a method for obtaining a profile of a lens capsule of an eye;
wherein the profile is represented by respective central surfaces and respective equatorial surfaces separated by respective transition points;
wherein execution of the instructions by the processor causes the controller to:
obtain a lens diameter and at least two variables from a set of variables, the set of variables including a lens thickness, a central anterior apex and a central posterior apex;
set a transition coordinate as a product of the lens diameter and a predefined constant, the predefined constant being less than 0.5;
obtain a first plurality of variables (Ka, Qa, Ra) and a pair of anterior parameters (Ga, Pa) by simultaneously solving a first group of constraints based in part on the transition coordinate; and
obtain a second plurality of variables (Kp, Qp, Rp) and a pair of posterior parameters (Gp, Pp) by simultaneously solving a second group of constraints based in part on the transition coordinate.