Ultrasound
biomicroscopy utilizes high frequency transducers to obtain high resolution.
Our unit, with a 50 MHz transducer, achieves a resolution of approximately 50
microns, and has a tissue penetration of 4-5 mm. Scanning is performed with
the patient in the supine position under standardized room lighting
conditions. Scanning is performed under topical anesthesia using a 20 mm eye
cup which is inserted between the lids and filled with saline solution. In
vivo, cross-sectional or transverse images can then be obtained detailing the
cornea, iris, ciliary body, anterior chamber angle, and peripheral sclera to
demonstrate structural relationships.
Normal Eye
Normal Eye UBM Image
Angle-Closure Glaucoma
Pupillary block
Before and after laser iridotomy
Dark room provocative testing
Plateau iris
Iris cysts and tumors
Pigment Dispersion Syndrome and Pigmentary Glaucoma
Before and after laser iridotomy
Before and during accommodation
Ocular Trauma
Cyclodialysis cleft
Angle recession
Intraocular Lens Position
Capsular bag fixation
Sulcus fixation
Malpositioned IOL
Failing Filtering Blebs
Functioning blebs
Four sites of obstruction to outflow
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