Comparison of non contact tonometry with goldmann applanation tonometry and its correlation with central corneal thickness

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Original Article

Author Details : Ajit K Joshi, Indrajit Shinde*, Amit Pathak

Volume : 8, Issue : 2, Year : 2022

Article Page : 154-158

https://doi.org/10.18231/j.ijooo.2022.032

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Abstract

Aim: The aim of this research was to see how GAT and NCT are compared in different IOP ranges and its correlation with CCT.
Materials and Methods: Topcon CT 800 was used for NCT, and the GAT model was a Slit lamp mounted Optilasa, S.L(Avenida de Manoteras, 22 Madrid, Spain). Topcon SP-1P Specular microscope was used to measure the CCT.
Results: A total of 50 patients (100 eyes) were included in the study. Out of 50 patients, 48% were females and 52% were males. NCT and GAT readings were analyzed in three IOP groups of less than 12 mmHg (n=16), 13-24 mmHg (n=73) and more than 25 mmHg (n=11). Most of the NCT and GAT readings were found to be in 13-24 mmHg group. Both NCT and GAT are significantly correlated with CCT (p<0 r =0.704 r=0.584.> Conclusion: IOP measurement of NCT was consistently higher than GAT and corneal thickness affects NCT more than GAT and by applying appropriate correction factor for CCT, NCT can be considered as a good screening tool for evaluation of glaucoma.
 
Keywords: GAT, NCT, CCT

How to cite : Joshi A K, Shinde I, Pathak A, Comparison of non contact tonometry with goldmann applanation tonometry and its correlation with central corneal thickness. IP Int J Ocul Oncol Oculoplasty 2022;8(2):154-158

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