J Korean Ophthalmol Soc > Volume 60(12); 2019 > Article
Journal of the Korean Ophthalmological Society 2019;60(12):1250-1256.
DOI: https://doi.org/10.3341/jkos.2019.60.12.1250    Published online December 15, 2019.
Comparison of Intraocular Pressures Measured by the Corvis ST and Other Tonometers in Normal Eyes.
Seung hoon Lee, Jung il Moon, Youn Hea Jung
Department of Ophthalmology, College of Medicine, The Catholic University, Seoul, Korea. younhea@hotmail.com
정상 한국인에서 Corvis ST와 골드만압평안압계, 리바운드안압계로 측정한 안압 비교
이승훈 · 문정일 · 정윤혜
가톨릭대학교 의과대학 안과학교실
Correspondence:  Youn Hea Jung,
Email: younhea@hotmail.com
Received: 22 May 2019   • Revised: 10 June 2019   • Accepted: 6 December 2019
We compared the intraocular pressures (IOPs) measured by the Corvis ST (CST), Goldmann applanation tonometer (GAT), and Rebound tonometer (RBT) and correlated the measured IOPs with the corneal center thickness (CCT). METHODS: The IOPs were measured in 34 eyes of 34 normal subjects using the CST, GAT, and RBT by independent examiners. Comparisons between the IOPs measured by the CST and other tonometers were made using paired t-tests and Bland-Altman plots and Pearson's correlation coefficient was used to correlate the measured IOPs with the CCTs. RESULTS: The IOP measured by the CST (C-IOP; 14.57 ± 2.37 mmHg) was significantly higher than that measured by the GAT(13.56 ± 2.25 mmHg) and RBT (13.57 ± 3.26 mmHg) (p < 0.05). The biomechanically corrected C-IOP (C-bIOP; 13.40 ± 2.06mmHg) showed no difference from the GAT-IOP and RBT-IOP (p > 0.50). In analyzing the correlation with CCT, RBT-IOP (R =0.34; p = 0.705) showed a lower correlation than the GAT-IOP (R = 0.49; p < 0.01) and C-IOP (R = 0.48; p < 0.01). The C-bIOP showed no correlation with the CCT (p = 0.74). CONCLUSIONS: The IOP measurements using the C-IOP were significantly higher than the RBT-IOP and GAT-IOP but the C-bIOP showed no difference from the RBT-IOP and GAT-IOP. C-IOP, RBT-IOP, and GAT-IOP were significantly correlated with corneal thickness, but there was no correlation between CCT and C-bIOP. C-bIOP may therefore be considered clinically useful.
Key Words: Biomechanical corrected intraocular pressure;Central corneal thickness;Corvis ST

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