Correlation between Central Corneal Thickness, Corneal Curvature and Axial Length of The Eye in Myopic & Hypermetropic Patients

Background : The refractive errors are the most common cause of visual deterioration worldwide. Correction of refractive errors can be divided into optical & surgical methods with global tendency toward the surgical correction of refractive errors which is highly dependent on determining the central corneal thickness. Objectives: the study was done to assess the relation between the central corneal thickness corneal curvature and axial length of the eye in myopic, and hypermetropic patients. Patients and methods: The patients in this study were selected from the outpatient clinic of ophthalmology department, Qena University Hospital, South Valley University. The data collection sheet enclosed personal data (age, gender), visual acuity, refraction, keratometry, axial length of the eye, & central corneal thickness of 140 patients. Results: In this study most of the cases were females (65%) in the age group (7-39y). Myopia is the most common refractive error (68%). Increasing axial length of the eye is associated with increase in myopic refraction& mild flattening of corneal curvature. Steepening of corneal curvature is associated with mild decrease of the central corneal thickness. No significant correlation detected between axial length of the eye & central corneal thickness. Conclusion: Myopia is the most common refractive error. There is mild negative correlation between central corneal thickness & corneal curvature. Axial length of the eye has mild negative correlation with corneal curvature. While no significant correlation was detected between central corneal thickness & axial length of the eye.