Nonoptical definition of applanation surface.
Based on the Imbert-Fick law and the theoretical considerations of Goldmann, new applanation tonometers were designed, still using an applanation diameter of 3.06 mm to avoid a new biometric calibration. Three different electronic recording devices were used for the area assessment. An optical, a capacitance and a digital line sensor were tested in first calibration experiments.
Draeger
J
J
Department of Ophthalmology, University of Hamburg, FRG.
Rumberger
E
E
Hechler
B
B
Wirt
H
H
Levedag
S
S
Rudolph
G
G
Ludwig
B
B
Klemm
M
M
D000818:Animals; D002138:Calibration; D004867:Equipment Design; D006801:Humans; D008838:Microcomputers; D013552:Swine; D014065:Tonometry, Ocular / Q000295:instrumentation*