Table 1 Geometric variables analyzed in the study
From: Study and characterization of morphogeometric parameters to assist diagnosis of keratoconus
Geometric variable | Description |
|---|---|
Total corneal volume (mm3) | Volume limited by front, back and peripheral surfaces of the solid model generated |
Anterior corneal surface area (mm2) | Area of the front/exterior surface |
Posterior corneal surface area (mm2) | Area of the rear/interior surface |
Total corneal surface area (mm2) | Sum of anterior, posterior and perimetral corneal surface areas of the solid model generated |
Anterior apex deviation (mm) | Average distance from the Z axis to the highest point (apex) of the anterior corneal surface |
Posterior apex deviation (mm) | Average distance from the Z axis to the highest point (apex) of the posterior corneal surface |
Anterior minimum thickness point deviation (mm) | Average distance in the XY plane from the Z axis to the minimum thickness point of the anterior corneal surface |
Posterior minimum thickness point deviation (mm) | Average distance in the XY plane from the Z axis to the minimum thickness point of the posterior corneal surface |