Evaluating the Diagnostic Accuracy of the iCare Rebound Tonometer Compared to the Goldmann Applanation Tonometer
Journal of Ophthalmic and Optometric Sciences,
Vol. 6 No. 4 (2022),
24 September 2022
,
Page 21-26
Abstract
Purpose: To compare the diagnostic accuracy of the iCare rebound tonometer and the Goldmann Applanation Tonometer (GAT).
Patients and Methods: A comparative assessment of intraocular pressure (IOP) was conducted on patients visiting the vision clinic at Torfeh Eye Hospital. The IOP of both eyes of each patient was initially measured by one individual using the iCare tonometer device. Then, the patients were referred to the ophthalmology department, where the IOP of both eyes was measured using the GAT by an ophthalmologist who was unaware of the IOP results obtained with the iCare tonometer.
Results: The mean age of the patients entering the study was 49 ± 17 years. The mean IOP measured with the GAT was 14.47 ± 5.92 mmHg with a range of 6 mmHg to 75 mmHg. With the iCare tonometer, it was 14.44 ± 6.42 mmHg, with a range of 6.1 mmHg to 80.7 mmHg, indicating no statistically significant difference between the two devices. There was a very strong correlation (r: 0.864; 95% confidence interval 0.732-0.983; P < 0.001) between the measurements by GAT and the iCare device. The correlation strength did not show a substantial difference between male (r: 0.885) and female patients (r: 0.816). The correlation was strong among patients with low IOP (r: 0.631), normal IOP (r: 0.797), and high IOP (r: 0.781) eyes.
Conclusion: iCare tonometer IOP readings have acceptable correlation with GAT readings and can be considered a reliable alternative to GAT for measuring IOP by primary health providers.
- Glaucoma
- Tonometer;
- Blindness
- Screening
- iCare
- Intra Ocular Pressure
How to Cite
References
- Hashemi H, Mohammadi M, Zandvakil N, Khabazkhoob M, Emamian MH, Shariati M, et al. Prevalence and risk factors of glaucoma in an adult population from Shahroud, Iran. J Curr Ophthalmol. 2018;31(4):366-72.
- Krieglstein GK. Blindness caused by glaucoma. Ophthalmologe. 1993;90(6):554-6. (Article in German).
- Medical Advisory Secretariat. Diurnal tension curves for assessing the development or progression of glaucoma: an evidence-based analysis. Ont Health Technol Assess Ser. 2011;11(2):1-40.
- Aspberg J, Heijl A, Bengtsson B. Screening for Open-Angle Glaucoma and Its Effect on Blindness. Am J Ophthalmol. 2021;228:106-16.
- Brusini P, Salvetat ML, Zeppieri M. How to Measure Intraocular Pressure: An Updated Review of Various Tonometers. J Clin Med. 2021;10(17):3860.
- Li Y, Carpenter CR, Nicholson K, Milne WK. Diagnostic accuracy of the iCare rebound tonometer compared to the Perkins applanation tonometer in assessing intraocular pressure in rural patients. Diagnosis (Berl). 2015;2(4):227-34.
- Allison K, Patel D, Besharim C. The Value of Annual Glaucoma Screening for High-Risk Adults Ages 60 to 80. Cureus. 2021 Oct 12;13(10):e18710.
- Mostafa I, Bianchi E, Brown L, Tatham AJ. What is the best way to measure intraocular pressure (IOP) in a virtual clinic? Eye (Lond). 2021;35(2):448-54.
- Gao F, Liu X, Zhao Q, Pan Y. Comparison of the iCare rebound tonometer and the Goldmann applanation tonometer. Exp Ther Med. 2017;13(5):1912-16.
- Liu J, De Francesco T, Schlenker M, Ahmed II. Icare Home Tonometer: A Review of Characteristics and Clinical Utility. Clin Ophthalmol. 2020;14:4031-45.
- Salvetat ML, Zeppieri M, Miani F, Tosoni C, Parisi L, Brusini P. Comparison of iCare tonometer and Goldmann applanation tonometry in normal corneas and in eyes with automated lamellar and penetrating keratoplasty. Eye (Lond). 2011;25(5):642-50.
- Schuster AK, Erb C, Hoffmann EM, Dietlein T, Pfeiffer N. The Diagnosis and Treatment of Glaucoma. Dtsch Arztebl Int. 2020;117(13):225-34.
- Vandewalle E, Vandenbroeck S, Stalmans I, Zeyen T. Comparison of ICare, dynamic contour tonometer, and ocular response analyzer with Goldmann applanation tonometer in patients with glaucoma. Eur J Ophthalmol. 2009;19(5):783-9.
- Brusini P, Salvetat ML, Zeppieri M, Tosoni C, Parisi L. Comparison of ICare tonometer with Goldmann applanation tonometer in glaucoma patients. J Glaucoma. 2006;15(3):213-7.
- Kim KN, Jeoung JW, Park KH, Yang MK, Kim DM. Comparison of the new rebound tonometer with Goldmann applanation tonometer in a clinical setting. Acta Ophthalmol. 2013;91(5):e392-6.
- Stoor K, Karvonen E, Ohtonen P, Liinamaa MJ, Saarela V. Icare versus Goldmann in a randomised middle-aged population: The influence of central corneal thickness and refractive errors. Eur J Ophthalmol. 2021;31(3):1231-9.
- Abstract Viewed: 161 times
- pdf Downloaded: 101 times
