ALEXANDRIA, Va., July 28 -- United States Patent no. 12,690,854, issued on July 28, was assigned to Alcon Inc. (Fribourg, Switzerland).

"Ophthalmic speculum with an air-flow system" was invented by Mario Abraham (Burgthann, Germany) and Michael Wittnebel (Hirschaid, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ophthalmic speculum includes arms, a locking mechanism, and an air-flow system. The arms include a first arm and a second arm. Each arm has a retractor shaped to conform to an eyelid of a pair of eyelids of an eye. The retractors are substantially symmetrical about a lateral axis. The locking mechanism is coupled to the arms. The locking mechanism moves the arms to allow the retractors to ...