PREVALENCE OF CALIBRATION ERRORS IN GOLDMANN APPLANATION TONOMETERS

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AMINI HEYDAR; MOGHIMI SASAN; GOLESTANI M.; JABARVAND M.; ZAREEI REZA; ESMAEILI M.R.; ESFANDIARPOUR Z.; SOLTANI MOGHADAM R.

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Journal: Journal of Ophthalmic and Vision Research Year:2009 | Volume:4 | Issue:3 Page(s): 147-150

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Title

PREVALENCE OF CALIBRATION ERRORS IN GOLDMANN APPLANATION TONOMETERS

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Keywords

GOLDMANN TONOMETERS; CALIBRATION ERROR; INTRAOCULAR PRESSURE

Abstract

Purpose: To determine the prevalence of calibration errors in Goldmann applanation tonometers at Farabi Eye Hospital.Methods: This cross-sectional study was performed on all tonometers in use at Farabi Eye Hospital. All Haag-Streit Goldmann applanation tonometers were checked according to the manufacturer’s method by two independent observers and by a third observer in case of mismatched results. Calibration errors were classified into 6 categories of ±0.5, ±1, ±1.5, ±2, ±2.5 and more than ±2.5 mmHg. Results: Overall, 43 Goldmann tonometers were evaluated. There were 3 (7%), 10 (24.3%), 16 (38.3%), 24 (56.9%), 31 (72.1%) and 12 (27.9%) tonometers within calibration errors of ±0.5, ±1, ±1.5, ±2, ±2.5 and more than ±2.5 mmHg respectively.Conclusion: Goldmann tonometers were not within the manufacturer's recommended range (±0.5 mmHg) in 93%, and not within the acceptable range of ±2.5 mmHg in 28% of checked devices. Further study is needed to demonstrate the correlation between calibration errors and clinical errors.

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APA: Copy

AMINI, HEYDAR, MOGHIMI, SASAN, GOLESTANI, M., JABARVAND, M., ZAREEI, REZA, ESMAEILI, M.R., ESFANDIARPOUR, Z., & SOLTANI MOGHADAM, R.. (2009). PREVALENCE OF CALIBRATION ERRORS IN GOLDMANN APPLANATION TONOMETERS. JOURNAL OF OPHTHALMIC AND VISION RESEARCH, 4(3), 147-150. SID. https://sid.ir/paper/311367/en

Vancouver: Copy

AMINI HEYDAR, MOGHIMI SASAN, GOLESTANI M., JABARVAND M., ZAREEI REZA, ESMAEILI M.R., ESFANDIARPOUR Z., SOLTANI MOGHADAM R.. PREVALENCE OF CALIBRATION ERRORS IN GOLDMANN APPLANATION TONOMETERS. JOURNAL OF OPHTHALMIC AND VISION RESEARCH[Internet]. 2009;4(3):147-150. Available from: https://sid.ir/paper/311367/en

IEEE: Copy

HEYDAR AMINI, SASAN MOGHIMI, M. GOLESTANI, M. JABARVAND, REZA ZAREEI, M.R. ESMAEILI, Z. ESFANDIARPOUR, and R. SOLTANI MOGHADAM, “PREVALENCE OF CALIBRATION ERRORS IN GOLDMANN APPLANATION TONOMETERS,” JOURNAL OF OPHTHALMIC AND VISION RESEARCH, vol. 4, no. 3, pp. 147–150, 2009, [Online]. Available: https://sid.ir/paper/311367/en

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