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 treating color deficiency. Called X-CHROM it is currently in production as a soft and hard contact lens. During private practice, he was a consultant to Helen Keller International for its development of “Childsight”. He also served at Natick Lab as a Lt Col (USAR) researching the effect of military stress on the visual system.
After retiring from private practice and the military he committed to humanitarian service with VOSH/International eventually leading the parent organization as president and executive director.
Dr Zeltzer is a life member of the AOA, the American Academy of Optometry and the New England College of Optometry. He was recognized as the Essilor-UNESCO Humanitarian of 2003, the Honorary Doctor of Ocular Science of the New England College of Optometry in 2004 from where he graduated in 1952 and the VOSH/International Lifetime Achievement Award 2008. Dr Zeltzer lectured and published numerous articles of color deficiency which are referenced in the X-CHROM manual online portal for NECO faculty and students.