Authors: Ajit K Joshi, Indrajit Shinde, Amit Pathak
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 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
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