Comparison of Intraocular Pressure Measurement by iCare Tonometer and Goldman Applanation Tonometer
DOI:
https://doi.org/10.51253/pafmj.v74i5.11090Keywords:
Goldmann Applanation tonometer, iCare ic 100 tonometer, Intraocular pressure, Ocular tonometry.Abstract
Objective: To compare the Intraocular Pressure measured by the Goldmann Applanation tonometer with by iCare ic100 tonometer in normal human eye to determine the accuracy and reliability of both methods.
Study Design: Comparative cross-sectional study.
Place and Duration of Study: Ophthalmology Department, Combined Military Hospital, Quetta Pakistan, from Oct 2022 to Apr 2023.
Methodology: Approval was secured prior to enrolling every individual, protecting their privacy throughout the process. All instruments adhered to the manufacturer's guidelines for calibration. A single ophthalmologist assessed the intraocular pressure of all participants. In our study we included 400 eyes (200 right and 200 left) among 200 patients. Initially, study eyes were inspected using a slit lamp. Subsequently, iCare tonometer and Goldman applanation tonometer were employed to gauge the intraocular pressure.
Results: Out of 200, 87 patients (43.5%) were male and 113(56.5%) were females. Median age of the patients was 51.00(45-58) years range from 22-77 years. Mean IOP measured by iCare was 19.01±7.86 mmHg and by Goldman applanation tonomter was 20.14±8.15 mmHg. The correlation coefficient value between the readings of two instruments was r=0.866 with significant p value (p< 0.001).
Conclusion: The iCare ic100 consistently provides high intraocular pressure measurements (2-3mmHg) compared to the Goldmann Applanation tonometer across various sub Groups.
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References
Brusini P, Salvetat ML, Zeppieri M. How to measure intraocular pressure: an updated review of various tonometers. J Clin Med 2021; 10(17): 3860.
https://doi.org/10.3390/jcm10173860
Olyntho Junior MA, Augusto LB, Gracitelli CP, Tatham AJ. The effect of corneal thickness, densitometry and curvature on intraocular pressure measurements obtained by applanation, rebound and dynamic contour tonometry. Vision 2020; 4(4): 45.
https://doi.org/10.3390/vision4040045
Ramesh PV, Ramesh SV, Sainath D. Commentary: Decoding the intraocular pressure conundrum surrounding the core of COR. Indian J Ophthalmol 2023; 71(3): 879-880.
https://doi.org/10.4103/ijo.IJO_7_23_7
Da Silva F, Lira M. Intraocular pressure measurement: A review. Surv Ophthalmol 2022; 67(5): 1319-1331.
https://doi.org/10.1016/j.survophthal.2022.03.001
Hojati A, Yerrabelli RS, Amin AS, Smith AD, Brozek J. A simulator for Goldmann Applanation Tonometry: a novel approach to training. Res Sq 2023.
https://doi.org/10.21203/rs.3.rs-2503331/v1
Garcia-Feijoo J, Martinez-de-la-Casa JM, Morales-Fernandez L, Frances FS, Santos-Bueso E, Garcia-Saenz S, et al. New technologies for measuring intraocular pressure. Prog Brain Res 2015; 221: 67-79.
https://doi.org/10.1016/bs.pbr.2015.06.003
Moses RA. The Goldmann applanation tonometer. Am J Ophthalmol 1958; 46(6): 865-869.
https://doi.org/10.1016/0002-9394(58)90998-X
Ahmed RM, Nawwar MT, Ourouk WM, Higazy MT. Comparison of Rebound Tonometry and Goldmann Applanation Tonometry in Measuring Intraocular Pressure in Healthy Subjects. Benha J Appl Sci 2022; 7(4): 113-117.
Saarela V, Karvonen E, Stoor K, Hägg P, Luodonpää M, Kuoppala J, et al. The Northern Finland birth cohort eye study: design and baseline characteristics. BMC Ophthalmol 2013; 13: 1-7. https://doi.org/10.1186/1471-2415-13-51
Nakakura S, Asaoka R, Terao E, Nagata Y, Fukuma Y, Oogi S, et al. Evaluation of rebound tonometer iCare IC200 as compared with ICare PRO and Goldmann applanation tonometer in patients with glaucoma. Eye Vis 2021; 8: 1-9.
https://doi.org/10.1186/s40662-021-00249-z
Wong B, Parikh D, Angert M, Gorski M, Shih C. Comparison of disposable Goldmann applanation tonometer and ICare ic100 to standards of care Goldmann nondisposable applanation tonometer and Tono-pen XL for Measuring Intraocular Pressure. Invest. Ophthalmol. Vis. Sci 2017; 58(8): 5318.
Garcia-Feijoo J, Martinez-de-la-Casa JM, Morales-Fernandez L, Frances FS, Santos-Bueso E, Garcia-Saenz S, et al. New technologies for measuring intraocular pressure. Prog Brain Res 2015; 221: 67-79. https://doi.org/10.1016/bs.pbr.2015.06.003
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): 213-217.
https://doi.org/10.1097/01.ijg.0000212208.87523.66
Clement CI, Parker DG, Goldberg I. Suppl 1: M2: Intra-Ocular Pressure Measurement in a Patient with a Thin, Thick or Abnormal Cornea. Open Ophthalmol J 2016; 10: 35.
https://doi.org/10.2174%2F1874364101610010035
Bechmann M, Thiel MJ, Roesen B, Ullrich S, Ulbig MW, Ludwig K, et al. Central corneal thickness determined with optical coherence tomography in various types of glaucoma. Br J Ophthalmol 2000; 84(11): 1233-1237.
http://dx.doi.org/10.1136/bjo.84.11.1233
Pakrou N, Gray T, Mills R, Landers J, Craig J. Clinical comparison of the ICare tonometer and Goldmann applanation tonometry. J Glaucoma 2008; 17(1): 43-47.
https://doi.org/10.1097/IJG.0b013e318133fb32
Subramaniam AG, Allen P, Toh TY. Comparison of the ICare ic100 rebound tonometer and the Goldmann Applanation Tonometer in 1,000 Eyes. Ophthalmic Res 2021; 64(2): 321-326.
https://doi.org/10.1159/000511455
Tamçelik N, Atalay E, Cicik E, Özkök A. Comparability of ICare pro rebound tonometer with Goldmann applanation and noncontact tonometer in a wide range of intraocular pressure and central corneal thickness. Ophthalmic Res 2015; 54(1): 18-25.
https://doi.org/10.1159/000381781
Martinez-de-la-Casa JM, Garcia-Feijoo J, Castillo A, Garcia-Sanchez J. Reproducibility and clinical evaluation of rebound tonometry. Invest Ophthalmol Vis Sci 2005; 46(12): 4578-4580.
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Copyright (c) 2024 Asem Hameed, Beenish Saleem, Mahwish Akhtar, Waseem Yousaf, Taimoor Ashraf Khan, Abdul Qadir
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