Computer-aided ultrasonic measurements of the corneal thickness

This report regards the measurements of the central corneal thickness by means of a computerized ultrasonic biometry system that had been developed by the authors. The characteristics of this system are: (a) a data rate of 10 measurements/s (reduced from the technical maximum of 800/s); (b) a resolution of 0.02 mm, and (e) statistical evaluation of data by automatic measurement histogram. The preliminary results on models and living human eyes suggest an equivalence of the improved ultrasonic measurement in cases where an immersion technique is feasible, with optical methods usually applied in clinical routine.