Before revision: Armand Imbert (1850-1922) and Adolf Fick (1829-1901) have both independent of one another demonstratedthat the tension of the wall can be eliminated when the application of the tonometer produces a flat surface instead of a concave one, and the reading of the tonometer (P) then equals (T) the IOP, whence all forces cancel each other.
After revision: Armand Imbert (1850-1922) and Adolf Fick (1829-1901) have both demonstrated, independently of each other, that in ocular tonometry"" the tension of the wall can be eliminated when the application of the tonometer produces a flat surface instead of a concave one, and the reading of the tonometer (P) then equals (T) the IOP, whence all forces cancel each other.