Comparative study between specular microscopy, pentacam and anterior segment optical coherence tomography in assessment of central corneal thickness

Background; Central corneal thickness (CCT) measurements are important for determining intraocular pressure (IOP), examining endothelium activity, and assessing patients before after refractive surgery . Contact non-contact techniques can be used to assess CCT, Aim objectives: in individuals with healthy corneas, CCT values taken three distinct devices: noncontact specular microscope, anterior segment optical coherence tomography (AS-OCT), pentacam, Subjects methods; This is observational prospective cross-sectional study, done at the outpatient clinics of Al-Azhar University hospitals on 100 eyes, Result: Regarding correlation between measured by Pentacam assessed AS-OCT Specular microscopy. There was high positive (r=0.887, p < 0.001) & microscopy (r=0.863,p 0.001), Conclusion; normal mentioned devices have a good correlation. Because there statistically significant variance, they cannot utilized interchangeably.Ultrasonic pachmetry recommended cases borderline pentacam pachymetric readings,