Hermann Snellen died in 1908.
Hermann Snellen was born in 1834.
Dr. Hermann snellan is the doctor that invented the snellen eye chart.
Hermann Snellen, a Dutch ophthalmologist, is credited with inventing the Snellen chart, which is used to test visual acuity by measuring a person's ability to see letters or symbols at a distance.
Samuel Constantinus Snellen van Vollenhoven died in 1880.
Snellen chart was created in 1862.
snellen chart
Hermann Grab died in 1949.
Hermann Hirt died in 1936.
Hermann Kallenbach died in 1945.
Hermann Frenkel died in 1932.
Hermann Necke died in 1912.
Hermann Schridde died in 1985.