Document Type

Original Article


Background: Cornea is the transparent window on the front of the eye with a dome shape. The cornea forms the anterior part of the eye outer coat. This coat's primary function is to protect the intra ocular components. The cornea serves as a structural barrier and guards the eye against infections. It offers the eye's anterior refractive surface with the tear film. Two-thirds of the eye's refractive power contributed by the cornea

Objective: The study aims to report and correlate central corneal thickness (CCT) by Pentacam, .corneal hysteresis (CH), corneal resistance factor. (CRF), corneal compensated intraocular pressure. (IOP cc), and Goldenmann-correlated intraocular pressure. (IOP g) by ocular response analyser. (ORA) to know the average of the normal Egyptian population in Alsharquia government.

Methodology: This study was cross-sectional observational non-interventional study including 300 eyes of 150 persons randomly selected from the outpatient clinic of Alfath Private Eye Hospital, Zagazig, Alsharqia

Results: Our study sees that there is statistically significant decrease on central corneal thickness with increase the age. Age was statistically significant negative correlated with CH and CRF. In our study there was statistically significant positive correlation between CCT with, CRF and IOP g among the normal population. While regarding IOPcc, there was no statistically significant correlation with CCT and statistically significant positive correlation with CRF.

Conclusion: CCT has a significant correlation with CH., CRF and IOPg and no significant correlation with IOPcc, sex or the type of the eye, however CCT was significantly decrease with increase the age


Central Corneal Thickness; Corneal Hysteresis; Intraocular Pressure.

Subject Area