Professor Troy has been engaged in neuroscience research for more than 30 years, starting with his doctoral work studying visual signal processing by neurons of the cat lateral geniculate nucleus. He has continued throughout his career to investigate the functional properties of neurons of the retina and lateral geniculate nucleus of cat, monkey, mouse and rat. He has also investigated how different classes of retinal ganglion cell tile the retina. The underlying theme of this work has been to arrive at a full quantitative description of how retinal ganglion and lateral geniculate cells encode visual information in mammals, including the human being. Recently, Dr. Troy has expanded this effort to consider how the retina changes in disease states and what can be done to retard or reverse these changes. He has been collaborating with Dr. Xiaorong Liu in a study of ocular hypertension. Using a mouse model of glaucoma, they are investigating the progression of the disease and some drug treatments that might be effective in delaying or halting its progression.