Bilateral Circumscribed Posterior Keratoconus: Visualization by Ultrasound Biomicroscopy and Slit-Scanning Topography Analysis

Figure 5

Ultrasound biomicroscopy shows the local anterior bulging of the posterior corneal surface with concomitant thinning of the stroma. Note the configuration of the enhanced stromal reflectivity (arrowhead) corresponding to the stromal opacity.