Dr. Lewis retired as President of the New England College of Optometry in 2016 and continues working as a physiological optics consultant.  He taught at the SUNY College of Optometry for 20 years where he was Director of Graduate Studies and then served for 8 years as Dean of the Michigan College of Optometry.  He served two terms as president of the United States National Committee of CIE and served as president of the Illuminating Engineering Society of North America, and the Association of Schools and Colleges of Optometry.  He is a Fellow of both the American Academy of Optometry and the IES and is a recipient of the IES Medal and the Marks Award.  His research has primarily focused on environmental factors’ role on visual performance with an emphasis on glare; he has also studied the physiological basis of color vision and receptor interactions.  His most recent work has been on the role of spectral effects of roadway lighting and stereoscopic issues in robotic surgery.