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Goldmann Applanation Tonometer attached with Slit lamp biomicroscope. Goldmann Applanation Tonometer is an instrument that is based on Imbert-Fick law. It is considered to be the gold standard instrument for measurement of Intraocular pressure (IOP).
Tonometry is the procedure that eye care professionals perform to determine the intraocular pressure (IOP), the fluid pressure inside the eye. It is an important test in the evaluation of patients at risk from glaucoma . [ 1 ]
A patient in front of a tonometer. Intraocular pressure (IOP) is the fluid pressure inside the eye. Tonometry is the method eye care professionals use to determine this. IOP is an important aspect in the evaluation of patients at risk of glaucoma. [1] Most tonometers are calibrated to measure pressure in millimeters of mercury .
Armand Imbert (1850-1922) and Adolf Fick (1829-1901) both demonstrated, independently of each other, that in ocular tonometry the tension of the wall can be neutralized when the application of the tonometer produces a flat surface instead of a convex one, and the reading of the tonometer (P) then equals (T) the IOP," whence all forces cancel each other.
Goldmann applanation tonometry (GAT) is a widely used method to measure intraocular pressure (IOP) at the slit lamp. The technique involves gently applanating the central cornea with a Goldmann applanation prism while the tear film is stained with fluorescein dye.
Goldmann perimeter The Goldmann perimeter is a hollow white spherical bowl positioned a set distance in front of the patient. [3] An examiner presents a test light of variable size and intensity. The light may move towards the center from the perimeter (kinetic perimetry), or it may remain in one location (static perimetry).
Goldmann indirect goniolens: this truncated-cone like device utilises mirrors to reflect the light from the iridocorneal angle into the direction of the observer (as shown by the schematic diagram). In practice the image comes out roughly orthogonal to the back surface (nearer the practitioner), making observation and magnification with a slit ...
Goldmann's perimeter (1945 development), [4] Goldmann's tonometer, [4] Goldmann's indirect goniolens, Goldmann-Weekers Dark Adaptometer™, [5] and; fluorophotometer. He was the author of more than 200 articles in peer-reviewed journals. At the eye clinic of the University of Bern there is a Hans-Goldmann-Stiftung (Foundation) for orthoptics ...