She worked under George Wald, investigating the biochemistry of retinal and retinol. According to an interview given by Ruth, together they built on the work that Wald had researched during a fellowship following his own doctorate degree.
George Wald's protégée collaborated with him on investigating the chemical makeup of retinal and retinol. According to a conversation shared by Ruth, they built upon Wald's earlier work, which he had initiated after earning his Ph.D.