Flaum Eye Institute / Research / Labs / Huxlin Lab / Lab Members / Collaborators Collaborators Farran Briggs, Ph.D. Steven Feldon, M.D., M.B.A. Brent Johnson, Ph.D. Scott MacRae, M.D. Ross Maddox, Ph.D. Keith Nehrke, Ph.D. Martina Poletti, Ph.D. Patricia Sime, Ph.D.