Comparative Study of Intraocular Pressure Measurements by Goldmann Applanation Tonometer, Noncontact Tonometer and TonoPen
Authors:
M. Česká Burdová; K. Ferrová; A. Filouš; K. Oskorypová; P. Ležatková; P. Sedláčková
Authors‘ workplace:
Oční klinika dětí a dospělých UK 2. LF a FN Motol, Praha, přednostka prof. MUDr. D. Dotřelová, CSc.
Published in:
Čes. a slov. Oftal., 68, 2012, No. 1, p. 43-46
Category:
Original Article
Overview
The purpose of the study was to compare the levels of the intraocular pressure (NOT) measured in one eye at the same moment by three different methods: by Goldmann applanation tonometer (AT), non-contact tonometer (BT) and Tono-Pen (TP). It was further set the average variability of the performed measurements for particular tonometric methods.
Methods:
NOT was assessed in 106 eyes of 106 subjects aged 7-77 years (average 34.3 ± 17.1 years). NOT was measured at the same moment with BT, TP and AT. The obtained data were statistically analyzed.
Results:
The average NOT was 16.55 ± 2.95, 17.95 ± 4.47 and 16.13 ± 3.4mmHg when AT, BT and TP were applied. Average variability of three measurements for AT, BT and TP was 1.51 ± 0.96, 1.78 ± 1.08 and 1.47 ± 0.9 mmHg. Average NOT levels of the measured AT and TP were almost identical with a difference of 0.42 mmHg (p = 0.236). Average level of the intraocular pressure measured by BT was higher by 1.40 mmHg and 1.82 mmHg in comparison with AT and TP (p = 0.00002), respectively.
Conclusion:
NOT measurement produced almost identical average levels at AT and TP, whereas at BT the levels were much higher. Average variability of the three subsequent NOT measurements was the highest at BT, whereas at AT and TP the average variability was lower and nearly identical.
Key words:
intraocular pressure, Goldmann applanation tonometry, non-contact tonometry, Tono-Pen
Sources
1. Bhan, A., Browning, AC., Shah, S. et al.: Effect of corneal thickness on intraocular pressure measurements with the pneumotonometer, Goldmann applanation tonometer, and Tono-Pen, Invest Ophthalmol Vis Sci, 43, 2002; 5: 1389–1392.
2. Burdová, M.Č., Ferrová, K., Filouš, A. et al.: Závislost nitroočního tlaku měřeného aplanační tonometrií, bezkontaktní tonometrií a TonoPenem na centrální tloušt’ce rohovky, Čes a slov Oftal, 67, 2011; 5-6:154–157.
3. Carrim, Z.I., Lavy, T.E.: Goldmann tonometry versus the Tono-Pen XL for intraocular pressure measurement: an evaluation of the potential impact on clinical decision making in glaucoma, Ophthalmic Physiol Opt., 29, 2009; 6: 648–51.
4. Deuter, CM, Schlote, T., Hahn, G.A. et al.: Measurement of intraocular pressure using the Tono-Pen in comparison with Goldmann applanation tonometry – a clinical study in 100 eyes, Klin Monbl Augenheilkd, 219, 2002; 3: 138–42.
5. Douhgty, M.J., Laiquzzaman, M., Müller et al.: Central Corneal Thickness in European (White) Individuals, Especially Children and the Elderly, and Assessment of its Possible Importace in Clinical Measures of Intra-ocular Pressure, Ophthal. Physiol Opt, 22; 2002: 491–504.
6. Doughty, M.J., Zaman, M.L.: Human Corneal Thickness and Its Impact on Intraocular Pressure Measures: A review and Metaanalysis Approach, Survey of Ophthal, 44; 2000: 367–407.
7. Filouš, A., Burdová, M., Malec, J.: Tono-Pen XL- tonometr vhodný pro standardní i méně obvyklé podmínky při měření nitroočního tlaku, Čes a Slov Oftal, 54, 1998; 3:159–165.
8. Filouš, A., Malec, J., Burdová, M.: Naše zkušenosti s bezkontaktní tonometrií u dětí, Čes a Slov Oftal, 54, 1998, 3:154–158.
9. Filous, A., Osmera, J., Hlozanek, M.: The influence of corneal changes on the measurement of intraocular pressure in pediatric glaucomas, Acta Ophthalmol, 84; 2006, Suppl 238: 44.
10. Filouš A., Ošmera J., Hložánek M.: Význam pachymetrie rohovky dětí, Folia Strabol. Neuroophthalmol, IX, 2006, Suppl I: 31–35.
11. Horowitz, G.S., Byles, J., Lee J. at al.: Comparison of the Tono-Pen and Goldmann tonometer for measuring intraocular pressure in patients with glaucoma, Clin Experiment Ophthalmol, 32, 2004; 6: 584–9.
12. Mok, K.H., Wong, C.S., Lee, V.W.: Tono-Pen tonometer and corneal thickness, Eye, 1999, 13:35-7.
13. Murase, H., Sawada, A., Mochizuki, K. et al.: Effects of corneal thickness on intraocular pressure measured with three different tonometers, Jpn J Ophthalmol. 53, 2009; 1: 1–6.
14. Ošmera, J., Filouš, A., Hložánek, M.: Centrální tloušťka rohovky, nitrooční tlak a jejich vzájemný vztah u zdravých českých dětí ve věku 7 až 17 let, Čes. a slov. Oftal., 65, 2009; 1: 19–23.
15. Paranhos, A.Jr., Paranhos, F.R., Prata, J.A.Jr. et al.: Influence of keratometric readings on comparative intraocular pressure measurements with Goldmann, Tono-Pen, and noncontact tonometers, J Glaucoma, 9, 2000; 3:219–23.
16. Sullivan-Mee, M., Pham, F.: Correspondence of Tono-Pen intraocular pressure measurements performed at the central cornea and mid-peripheral Cornea, Optometry, 75, 2004; 1: 26–32.
17. Terminology and guidelines for glaucoma, European Glaucoma society, 2nd edition, Dogma, 2003: Ch 1–4.
18. Terminology and guidelines for glaucoma, European Glaucoma society, 3rd edition, Dogma, 2008: 64.
19. Tonnu, P.A., Ho, T., Newson, T. et al.: The influence of central corneal thickness and age on intraocular pressure measured by pneumotonometry, non-contact tonometry, the Tono-Pen XL, and Goldmann applanation tonometry, Br J Ophthalmol, 89, 2005; 7: 851–854.
20. Tonnu, P.A., Ho, T., Sharma, K. et al.: A comparison of four methods of tonometry: method agreement and interobserver variability, Br J Ophthalmol, 2005; 89: 847–850.
21. Viestenz, A., Lausen, B., Junemann, A.M. et al.: Comparison of precision of the TonoPenXL with the Goldmann and Draeger applanation tonometer in a sitting and recumbent position of the patients- a clinical study on 251 eyes, Klin Monatsbl Augenheilkd, 2002; 219: 785–790.
22. Yildirim, N., Sahin, A., Basmak, H. et al.: Effect of central corneal thickness and radius of the corneal curvature on intraocular pressure measured with the Tono-Pen and noncontact tonometer in healthy schoolchildren, J Pediatr Ophthalmol Strab, 44, 2007; 4: 216–222.
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Czech and Slovak Ophthalmology
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