ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,408,834, issued on Sept. 9, was assigned to ALCON INC. (Fribourg, Switzerland).

"Tracking movement of an eye within a tracking range" was invented by Jessica Jurich (Berlin), Horia Grecu (Berlin), Martin Grundig (Rangsdorf, Germany) and Tobias Jura Rapoport (Berlin).

According to the abstract* released by the U.S. Patent & Trademark Office: "In certain embodiments, a system for tracking movement of an eye comprises a camera system, a computer system, and an output device. The camera system generates images of the eye. The computer system stores the images and at least one of the images as a reference image. The computer system also tracks movement of the eye within a tracking range ...