The Correlation between Biomechanical Properties of Normal Cornea with Tomographic Parameters of Pentacam

Purpose: to investigate the correlation between corneal biomechanical properties and tomographicparameters of pentacammethods: corneal biomechanical properties and tomographic results of 36 normal subjects weremeasured by ocular response analyzer (ora) and pentacam and the correlation between thesetwo measurements were analyzed with pearson correlation test with spss version16.results: significant correlation was found between corneal hysteresis (ch) and central cornealthickness (cct), depth and angle of the anterior chamber, corneal shape factor and cornealvolume (p<0.05). strong association between corneal resistance factor (crf) and cct was alsofound (p<0.05). goldmann correlated intraocular pressure (iopg) had significant positive relationwith cct and negatively correlated with corneal power in different areas (p<0.05). cornealcompensated intraocular pressure (iopcc) had no significant correlation with cct (p>0.05).conclusion: corneal thickness had an effective role in determining biomechanical properties of thistissue. in addition, significant correlation between ch and corneal volume was also found. sincecorneal volume is a three dimensional parameter, it can play a more effective role than cornealthickness, the two dimensional parameter, in determining biomechanical properties of cornea.