caption birth_place work_institutions birth_date article_title name alma_mater
mark lecture , november 25 , 2013 blumenkranz during an interview following the jackson memorial new york city , new york , u.s. -lsb- stanford university http://stanfordhospital.org/eyeinstitute/ byers eye institute at stanford university -rsb- 23 october 1950 mark s. blumenkranz
 mark s. blumenkranz brown university
mark s. blumenkranz

mark scott blumenkranz , md -lrb- born october 23 , 1950 -rrb- is an american physician , surgeon , businessman , and entrepreneur .
he is a trained ophthalmologist and vitreoretinal surgeon , and has served as h.j. smead professor and chairman of ophthalmology of the byers eye institute at stanford university since 1997 .
he has founded or served on the board of directors of a number of companies , including oculex , peak surgical , optimedica corporation , macusight , and avalanche biotechnologies .
in addition , he serves as a trustee of brown university .
