ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,597, issued on March 25, was assigned to CooperVision International Ltd. (Fareham, Great Britain).

"Multifocal ophthalmic lenses and related methods" was invented by Martin Webber (Southampton, Great Britain) and Percy Lazon de la Jara (San Ramon, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multifocal ophthalmic lens wherein a first surface of the lens is shaped to form a surface power map and a second surface of the lens is shaped to form a second surface power map. The first surface power map and the second surface power map together form a lens power map. The first surface power map, the second surface power map, or the lens power ma...