Agreement and repeatability of Icare ic100 tonometer

Jose, Judy and Ramesh, S Ve and Pai, Vijaya H and Biswas, Sayantan and Parimi, Vamsi and Nagarajan, T (2020) Agreement and repeatability of Icare ic100 tonometer. Indian Journal of Ophthalmology, 68 (10). pp. 2122-2125. ISSN 0301-4738

[img] PDF
9821 DisplayPdf.pdf - Published Version
Restricted to Registered users only

Download (4MB) | Request a copy


Purpose: To find the agreement and repeatability of Icare ic100 tonometer. Methods: We included 150 subjects above the age of 18 years for this cross‑sectional, multicenter study with intraocular pressure (IOP) ≥7 mmHg. After the initial ophthalmic examination, two masked examiners took five IOP measurements using three different instruments; Icare ic100, Icare TA01i, and Goldmann applanation tonometer (GAT) in only one eye of the participants. Comparison of agreement of IOP using different instruments was quantified with intraclass correlation coefficient (ICC) using the two‑way random effects models of absolute agreement and Cronbach’s alpha. The test‑retest variability of the instruments was assessed by deriving repeatability coefficient (RC) and coefficient of variation (CV). Results: Agreement between the tonometers across the different IOP groups had no statistically significant difference in their mean IOP. Icare ic100 was found to have good reliability across all IOP groups (ICC value >0.78) when compared with Icare TA01i. In comparison with GAT, Icare ic100 showed good reliability across all IOP groups (ICC >0.87) except >16 to <23 mmHg group where it showed moderate reliability (ICC = 0.52).Icare ic100 showed good repeatability with RC and CV of 2.67 and 4.89, respectively.Conclusion: Icare ic100 rebound tonometer can measure IOP with relatively small measurement error and can provide a reliable and repeatable reading in comparison with GAT across a wide pressure range without hampering corneal health

Item Type: Article
Uncontrolled Keywords: Agreement; Icare‑tonometer; Intraocular pressure; Repeatability; Tonometer
Subjects: Allied Health > MCOAHS Manipal > Optometry
Medicine > KMC Manipal > Ophthalmology
Depositing User: KMC Library
Date Deposited: 05 Jul 2021 06:30
Last Modified: 05 Jul 2021 06:30

Actions (login required)

View Item View Item