Intraocular Pressure Comparison between Icare Tonometer with Goldmann Applanation Tonometer and Their Correlation with Central Corneal Thickness (CCT) In Glaucoma Suspects in A Tertiary Hospital

Authors

  • Kamala Thapa Shree Birendra Hospital, Chhauni, Nepalese Army Institute of Health Sciences,
  • Sachit Dhakal Shree Birendra Hospital, Chhauni, Nepalese Army Institute of Health Sciences,
  • Sagar Rajkarnikar Shree Birendra Hospital, Chhauni, Nepalese Army Institute of Health Sciences,
  • Ram Shrestha Shree Birendra Hospital, Chhauni, Nepalese Army Institute of Health Sciences,
  • Nabaratna Bista Shree Birendra Hospital, Chhauni, Nepalese Army Institute of Health Sciences,
  • Pragya Manjari Rana Shree Birendra Hospital, Chhauni, Nepalese Army Institute of Health Sciences,

DOI:

https://doi.org/10.61122/jkistmc295

Keywords:

intraocular pressure, ICare tonometer, Goldmann applanation tonometer, central corneal thickness.

Abstract

Introduction: Glaucoma is a group of optic neuropathies characterized by progressive degeneration of retinal ganglion cells where intraocular pressure (IOP) is the cardinal modifiable risk factor. This study is done to compare intraocular pressure (IOP) measurements obtained by ICare tonometer and Goldmann applanation tonometer (GAT) in glaucoma suspects and to investigate the influence of central corneal thickness (CCT) on IOP measurements.

Methods: 220 eyes of 110 patients diagnosed with glaucoma suspect attending glaucoma clinic of Shree Birendra Hospital underwent ultrasonic CCT followed by IOP measurement by ICare and GAT. The results were calculated and compared and the effect of CCT was co-related by linear regression analysis. Intraclass correlation analysis were performed to see the agreement between IOP measurement by ICare and GAT. Statistical test was done using SPSS V. 20.0 software.

 

Results: The mean IOP with ICare and GAT were 16.25 and 16.04 mmHg respectively which was not statistically significant (p=0.06). The mean CCT was 547.49um. The average IOP increased by 0.35 and 0.36mmHg for every 10-unit increase in CCT by ICare and GAT respectively. Intraclass correlation coefficient(ICC) between two modalities of IOP measurement was 0.89(95% CI=0.86-0.92), p<0.001 which was statistically significant.

 

Conclusion: IOP readings with ICare and GAT were comparable. IOP measurement were affected by CCT thus pachymetry should be taken into consideration

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Published

2024-07-31

How to Cite

1.
Thapa K, Dhakal S, Rajkarnikar S, Shrestha R, Bista N, Rana PM. Intraocular Pressure Comparison between Icare Tonometer with Goldmann Applanation Tonometer and Their Correlation with Central Corneal Thickness (CCT) In Glaucoma Suspects in A Tertiary Hospital. J. KIST Med. Col [Internet]. 2024 Jul. 31 [cited 2024 Nov. 21];6(12):12-6. Available from: https://jkistmc.org.np/jkistmc/index.php/JKISTMC/article/view/295

Issue

Vol. 6 No. 12 (2024): Journal of KIST Medical College

Section

Original Article

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Copyright (c) 2024 Kamala Thapa, Sachit Dhakal, Sagar Rajkarnikar, Ram Shrestha, Nabaratna Bista, Pragya Manjari Rana

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