Central Corneal Thickness Measurement with a Retinal Optical Coherence Tomography Device Versus Standard Ultrasonic Pachymetry

Imaging of the human cornea can be performed by a standard retinal OCT device, and OCT measurement of CCT shows excellent correlation to values obtained by PACH, giving similar readings separated by a constant difference. In corneal edema, the difference between the two methods is additionally increased, but continues to demonstrate excellent consistency.