[Auto recording system for the Goldmann perimeter]

In order to develop a method for converting the Goldmann perimeter data directly for computer storage and evaluation, a recording instrument was designed as a modification of the Goldmann perimeter. By installing the two potentiometers on the pantographic arm and electrical switches, the position of the test target and the setting of the four levers which defines the size and the brightness of the test target were transferred directly to the computer. Accuracy of this recording system is better than 1.3 degree over the entire surface of the chart. This system will make it possible to easily follow changes in the visual fields of the same patient, i.e. shape change, numerical value.