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ORIGINAL ARTICLE
Year : 2017  |  Volume : 23  |  Issue : 1  |  Page : 17-22

Corneal parameters among normal Egyptians with Pentacam Scheimpflug camera


Department of Ophthalmology, Mansoura Ophthalmic Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt

Correspondence Address:
Mona A Kader
Ophthalmology Center, Faculty of Medicine, Mansoura University, Mansoura, 35511
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JCRS.JCRS_8_17

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Purpose The aim of the study was to evaluate the corneal parameters [anterior and posterior elevation, keratometry values in the steep (K1) and flat (K2) meridians, central corneal thickness, and thinnest location] among normal Egyptians of different age with Pentacam Scheimpflug camera and to detect repeatability of Pentacam. Patients and methods A total of 2000 randomly chosen participants representing normal Egyptian population presenting to the outpatient clinic of the Ophthalmic Center were included in the study. They were aged from 20 to 60 years and included both sexes. They were divided into four groups. All patients were examined by Pentacam Tomey TMS-5 (topographic modeling system). The technique was repeated three times for each eye on the same day and three times the next day by two different observers. Results There were statistically significant differences in anterior elevation, posterior elevation, central corneal thickness, thinnest location, and K2 between the four groups (P=0.02, <0.001, 0.001, 0.002, and 0.004, respectively). However, there was no statistically significant difference in K1 between the four groups (P=0.092). Coefficient of variation for K1 and K2 was 0.17 and 0.19, respectively. Conclusion There were increases in the values of posterior elevation, K1, and K2 with the aging process. Excellent intraobserver and interobserver repeatability for K1, K2, and pachymetry maps and poor intraobserver and interobserver repeatability for astigmatism axis were observed.


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