Abstract
A new type of non-contact tonometer is described. The instrument is handheld and incorporates a system which automatically generates the measuring pulse of air when the alignment is correct. A brief description of the design and the results of clinical trials are presented. These establish a good correlation with paired Goldmann readings (correlation coefficient, r = 0.88 to 0.95, standard deviation, S.D. 1.56 to 2.66 mm Hg).
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Grolman B : A New Tonometer System, Am J Optom and Arch Am Acad Optom, 49: 8, 646-60, 1972.
Forbes M, Pico G, Grolman B : A Non-Contact Applanation Tonometer. Arch Ophthalmol. 1974, 91: 134–40.
Halber P, Previte L, Yellen M : ‘Report on Clinical Experience with NCT’. Proceedings of the International Glaucoma Symposium - Albi, Nov 1974.
Decker T and Keuther C : American Optical Non-Contacting Tonometer Evaluation. Presented to Am Acad of Optom. Annual Meeting in San Francisco, Dec 1973.
Draeger J, Jessen K, Haselmann G : Klinische und experimentelle Untersuchungen mit dem Non-Contact-Tonometer. Klin Mbl Augenheik. 1975, 167: 27–34.
Dittmar P, Weinberg M, Liegl O : Erfahrungen mit dem Non-Contact-Tonometer. Klin Mbl Augenheilk 1975, 167: 137–41.
Kitazawa Y, Sue T, Horie T, Deguchi T : Clinical Evaluation of a Non-Contact-Tonometer. Acta Soc Ophthalmol Jap, 1975, 79.
Shields MB : The Non-Contact Tonometer: Its value and limitations. Surv Ophthalmol 1980, 23: 211.
Fisher J, New Tonometer . UK Patent Application 8513108, 23 May 1985.
Jessen K, Luebbig H, Weigelin E : Clinical and Statistical Aspects on Standardization of Tonometers. A v Graefes Arch klin exp Ophthal 1979, 209: 269–78.
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Fisher, J., Watson, P. & Spaeth, G. A new handheld air impulse tonometer. Eye 2, 238–242 (1988). https://doi.org/10.1038/eye.1988.48
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DOI: https://doi.org/10.1038/eye.1988.48
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