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Dr. Hans F. Lessmann O. D., FCOVD

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Dr. Hans F. Lessmann, Executive Director of VDI, is a Board Certified Fellow in both Vision and Light therapy by the College of Optometrists in Vision Development ( and the College of Syntonic Optometry ( He has won numerous awards, including being named Pennsylvania’s Optometrist of the Year in 2003 and the Charlie Butts Award in 2019.

He enjoys solving complex vision and developmental problems for all ages from infancy to late adulthood. Dr. Lessmann is the father of a daughter with Down syndrome and understands the concerns of children with special needs and their parents.