ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,021, issued on Jan. 27, was assigned to Avedro Inc. (Burlington, Mass.).

"Systems and methods for determining cross-linking distribution in a cornea and/or structural characteristics of a cornea" was invented by Desmond Christopher Adler (Bedford, Mass.), Jun A. Zhang (Lexington, Mass.), Mikhail Z. Smirnov (North Andover, Mass.), Marc D. Friedman (Needham, Mass.), David Usher (Waltham, Mass.), Grace Elizabeth Lytle (Boston) and David C. Iannetta (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a corneal measurement system, an optical element focuses an excitation light to an area of corneal tissue at a selected depth. In response,...