Measurement of the corneal thickness by videopachometry: Preliminary results

摘要

Corneal thickness measurements find applications in areas such as diagnosis and management of corneal disorders, corneal surgery, etc. In this work we present a technique for the measurement of corneal thickness using a CCD camera mounted on a slit-lamp biomicroscope and common image processing software. Thickness measurements were performed on three RGP contact lenses of known thickness with an average error of 5μm, SD of 8μm. Measurements of a living cornea yielded a thickness of 505μm and a SD of 5μm for 10 consecutive measurements; this is a very acceptable value.