Complex sentence: He was founding president and director of the non-profit Boston Foundation for Sight between 1992 and 2012, and in 2013 developed the non-profit Boston EyePain Foundation, in Chestnut Hill, Massachusetts.
Split into simpler sentences: He was founding president of the non-profit Boston Foundation for Sight in 1992 and its president and director until 2012. In 2013 he founded the non-profit Boston EyePain Foundation, in Chestnut Hill, Massachusetts.