Anterior segment imaging for glaucoma: OCT or UBM?

Routine OCT and UBM of the anterior segment

Anterior-segment imaging for assessment of glaucoma.

This article summarizes the physics, technology and clinical application of ultrasound biomicroscopy (UBM) and optical coherence tomography (OCT) for assessment of the anterior segment in glaucoma. UBM systems use frequencies ranging from approximately 35 to 80 MHz, as compared with typical 10-MHz systems used for general-purpose ophthalmic imaging. OCT systems use low-coherence, near-infrared ...

Imaging the Anterior Segment: High-Frequency Ultrasound and Anterior Segment OCT

1 Department of Ophthalmology and Visual Sciences, FEDERAL University of São Paulo—UNIFESP, São Paulo, SP, Brazil 2 New York-Presbyterian Hospital at The Edward S. Harkness Eye Institute of Columbia University, New York, NY, USA 3Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada 4OHSU Oregon Health & Science University, Casey Eye Institute, Portland, OR...

Anterior segment OCT imaging after femtosecond laser cataract surgery.

PURPOSE To report the anterior segment imaging characteristics after femtosecond laser assisted cataract surgery. METHODS Cataract surgery was performed with the LenSx femtosecond laser (Alcon-LenSx Inc., Aliso Viejo, CA) in 40 eyes of 40 patients. The laser was programmed to perform a 4.5-mm capsulorhexis, a cross-pattern fragmentation of the nucleus, a 2.8-mm main incision, and a 1.0-mm sid...

Anterior segment imaging in glaucoma: An updated review

Anterior segment imaging allows for an objective method of visualizing the anterior segment angle. Two of the most commonly used devices for anterior segment imaging include the anterior segment optical coherence tomography (AS-OCT) and the ultrasound biomicroscopy (UBM). AS-OCT technology has several types, including time-domain, swept-source, and spectral-domain-based configurations. We perfo...