Abstract
The increasing advancement of ophthalmic procedures such as refractive surgeries, phakic lens implantations, and the management of corneal diseases has emphasized the critical nature of obtaining precise measurements of morpho-geometric parameters associated with the anterior eye segment, particularly the cornea. Despite the availability of numerous devices capable of measuring these parameters, none of them can be designated as a “gold standard”, making it particularly important to objectively characterize the differences in measurement between different devices, and the potential causes that generate them. This study seeks to evaluate possible interchangeability between measurements of the same morphological parameter in human corneas taken with two distinct technologies: the Scheimpflug Sirius tomographer and the Optical Coherence Tomographer (OCT) MS-39, both manufactured by CSO Italy. Ten healthy eyes from five adult males were selected for the study. Each eye underwent three tomographic measurements, with only those passing the devices' self-diagnostic quality test being recorded. Various morpho-geometric parameters related to the anterior and posterior corneal surfaces, as well as corneal volume, were then measured and extracted according to a validated method. Subsequently, a descriptive analysis was conducted to determine the distribution and variability of the data, followed by tests for normality and statistical comparisons. The findings suggest that while some parameters, such as anterior corneal area, demonstrate agreement between the devices, others such posterior corneal area or total corneal volume do not. In conclusion, results suggest possible interchangeably for some 3D morpho-geometrical parameters, but further study using a higher sample would be needed to confirm this evidence. Keywords: Volume, Elevation Maps, Thickness, Cornea.
Published Version
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