Dr. Zeltzer is an Adjunct Professor of Optometry in the department of Specialty and Advanced Care. He practiced optometry in Waltham, Mass for thirty-five years where he invented and patented a contact lens for treating color deficiency. Called X-CHROM it is currently in production as a soft and hard contact lens.
During his years in private practice he was a consultant to Helen Keller International for the development of the “Childsight Program”. He also served under the Surgeon General at Natick Lab in the study of contrast sensitivity and the effect of military stress on vision. Dr. Zeltzer lectured and published numerous articles about color deficiency including an online fitting manual for prescribing the X-CHROM lens. He continues to advise practitioners in the treatment of color deficiency.
Following his departure from private practice in 1985 he provided eye care where it is unavailable or affordable in the ranks and subsequently as the President and Executive Director of VOSH/International. He participated in numerous eye care missions throughout the world including ASPROSAR (Salvadoran Rural Health), the Indian Health Service and in Appalachia with Remote Area Medical and Frontier Nursing.
He is the recipient of the Essilor-UNESCO Humanitarian of The Year Award 2003, the Honorary Doctor of Ocular Science degree 2004 from the New England College of Optometry where he graduated in 1952 and the VOSH/International Lifetime Achievement Award 2008. Dr. Zeltzer is Director Emeritus of VOSH/International and Director Emeritus of ASAPROSAR. He is a life member of the New England College Optometry, The American Academy of Optometry and the American Optometric Association.