Abstract

Background-. Glaucoma is a progressive optic neuropathy. Elevated intraocular pressure is a well-known major risk factor for glaucoma. Thus, any factor that alters the value of the IOP can affect in the management of the patient. Several studies in the past has proven that central corneal thickness affects the accuracy of applanation tonometry. Thus Central Corneal Thickness (CCT) should be considered in the clinical evaluation of the glaucoma patient and glaucoma suspect. The aim of present study is to detect linear correlation between intraocular pressure and corneal thickness using Goldmann applanation tonometer and pachymeter and to compare the Central corneal thickness value in various type of glaucoma patients. Methods: The present Cross Sectional Clinical study was conducted in 100 patients attending the out patient department for the academic year 2021-2023. Patients of age more than 40 years who are diagnosed cases of glaucoma or are glaucoma suspects were included. IOP was measured using Goldmann’s Applanation Tonometer and CCT was measured using the ultrasound pachymeter. All the patients were classified as primary open angle glaucoma (POAG), primary angle closure glaucoma(PACG), ocular hypertensive (OHT) and glaucoma suspect(GS). Analysis of Variance and Pearson’s Correlation Test was used to determine any significant difference in CCT and the corrected IOP between the theses groups. Results: The mean CCT of OHT was much higher (567.12±25.49 µm) than the other groups. In case of thin cornea, corrected IOP is slightly greater than mean IOP while in case of normal and thick cornea as in cases of OHT corrected IOP is lower than mean IOP.

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