COMPARISON OF MEAN CENTRAL CORNEAL THICKNESS MEASUREMENTS USING ULTRASOUND PACHYMETRY AND SPECTRAL-DOMAIN OPTICAL COHERENCE TOMOGRAPHY IN PATIENTS WITH GLAUCOMA

Abstract

Background: The optic nerve damage with the ultimate loss of vision resulting from a clutch of diseases named Glaucoma. In many conditions including, corneal dystrophies, corneal edema, and endothelial diseases of the cornea, the important biometric is Central corneal thickness (CCT).
Objective: To compare the mean central corneal thickness (CCT) measurements obtained using spectral-domain optical coherence tomography (SD-OCT) and ultrasound pachymetry in patients presenting with glaucoma.
Materials and Methods: A cross-sectional observational study was conducted at Quaid e Azam Medical College, Bahawalpur and Bahawal Victoria Hospital, Bahawalpur from January, 2025 to June, 2025. A total of 180 patients diagnosed with or presenting with glaucoma were enrolled in the study. Central corneal thickness was measured in all participants using both SD-OCT and ultrasound pachymetry techniques. The collected data were electronically recorded and subsequently analyzed using Statistical Package for the Social Sciences (SPSS), version 20.0.
Results: 40.00±11.50 years was the average age of all the patients. There were 89(49.44%) males and 91(50.56%) females. The mean CCT was 531.01±28.54µm on OCT and 530.01±29.74µm on USP. The mean difference in CCT was 3.93±3.13µm between OCT & USP. The difference was statistically insignificant (p<0.05).
Conclusion: There is a statistically insignificant difference between the mean CCT with USP and spectral domain OCT patients presenting with Glaucoma.