Association of Central Corneal Thickness among Myopic and Emmetropic Patients Visiting Ophthalmology Department of a Tertiary Care Hospital in Islamabad.

Abstract

Aim The aim of the study was to determine difference between central corneal thickness (CCT) among myopic and emmetropic eyes.  Material and Methods A total of 186 participants participated in this comparative cross-sectional study. Sample size was calculated using the WHO calculator and enrolled by consecutive sampling technique. Detail eye examinations were performed of anterior and posterior segments with slit-lamp and refractive status were determined with Auto-refractometer (Nidek ARK 1a) and Pachymetry with Specular Microscope (Topcon SP2000P). The analysis of data was performed in SPSS 22.  Results To carry out the study, 186 candidates volunteered their time and effort. Male and female participants were included in the study. About 56% of the candidates were men, and 44% were women. Individuals' ages varied from 16 to 49, on average (16-49). As for the control group, the average central corneal thickness was 522.30 microns and standard deviation of ± 29.563. Their sizes varied from 439 microns to 619 microns. The average CCT of myopic people was 515.18 microns, and the standard deviation was ±28.972 microns. The relationship between CCT in myopic eyes and CCT in emmetropic eyes was analysed using a paired t test. The P value was only 0.09, the relevance of the test was not significant.  Conclusion: CCT difference between myopic and emmetropic eyes was no statistically significant (P 0.09).