ABSTRACT
References 129
1. INTRODUCTION
The use of ultrasound frequencies in the 40-100 MHz range is a relatively new develop-
ment in ultrasound imaging of the eye. This technique has been developed and refined at
the University of Toronto over the past decade (1-3). We have applied the term ultrasound
biomicroscopy to this technique because of similarities to optical biomicroscopy, that is,
the observation of living tissue at microscopic resolution. Such systems have provided
resolution approaching that of optical microscopy, which is not available using any
other imaging means. The ability to image subsurface phenomenon at microscopic resol-
ution has brought new understanding to a variety of glaucoma entities. The ability to
image the relationship of subsurface structures in real time can clarify mechanisms and aid
in understanding complications in glaucoma surgery.
