ALEXANDRIA, Va., June 9 -- United States Patent no. 12,285,218, issued on April 29, was assigned to Zhejiang Aizhitong Medical Technology Co. Ltd. (Zhejiang, China).
"Subjective and objective integrated precise optometry device, and optometry method" was invented by Liangyi He (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A subjective and objective integrated precise optometry device, and an optometry method are provided. The device has a left eye optical path and a right eye optical path. Each of the single eye optical paths comprises a human eye refraction objective measurement subsystem, a human eye refraction correction subsystem, an eyeball positioning subsystem, and a subjective visual functi...