ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,065, issued on Dec. 9, was assigned to Alcon Inc. (Fribourg, Switzerland).

"Modular IOL design" was invented by Stephen John Collins (Fort Worth, Texas), Philip Matthew McCulloch (Mansfield, Texas) and Rudolph F. Zacher (Trabuco Canyon, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A modular intraocular lens (IOL) with a ring configured to prevent glare artifacts. The ring includes a flange on the posterior rim, in which an anterior surface on the flange has a first profile and a posterior surface of the flange has a second profile non-parallel with the first profile. Non-parallel surfaces of the flange can be configured to defocus light trans...