Measuring Corneal Thickness With the ConfoScan 4 and Z-Ring Adapter

Abstract

Mean corneal thickness measured with the z-ring adapter with the ConfoScan 4 agrees with mean corneal thickness measured with the Tandem Scanning confocal microscope when both instruments are correctly calibrated. Ultrasonic pachymetry indicated a mean corneal thickness that was at least 35 microm greater than was indicated by either confocal microscope.