Journal of Current Glaucoma Practice

Register      Login

VOLUME 7 , ISSUE 2 ( May-August, 2013 ) > List of Articles


Imaging of Ocular Angle Structures with Fourier Domain Optical Coherence Tomography

Sanjay Asrani, Mei Young, Jing Xu, Marinko V Sarunic

Keywords : Optical coherence tomography, Anterior eye segment, Trabecular meshwork

Citation Information : Asrani S, Young M, Xu J, V Sarunic M. Imaging of Ocular Angle Structures with Fourier Domain Optical Coherence Tomography. J Curr Glaucoma Pract 2013; 7 (2):85-87.

DOI: 10.5005/jp-journals-10008-1141

License: CC BY-NC 4.0

Published Online: 01-12-2018

Copyright Statement:  Copyright © 2013; The Author(s).


Background: Imaging of the Schlemm's Canal is complicated by the small physiological size and the location several hundred microns beneath the sclera. Noninvasive imaging of Schlemm's canal and Trabecular Meshwork (TM) in vivo with Fourier Domain Optical Coherence Tomography (FD OCT) can provide clinicians with a powerful tool to visualize ocular angular structures crucial for glaucoma management. Purpose: To investigate the appearance of Schlemm's canal and TM on FD OCT images. Methods: FD OCT images of the Schlemm's canal and TM were obtained with three different wavelengths using prototype FD OCT systems in a normal volunteer. FD OCT images using the 1310 nm wavelength prototype were obtained in three representative cases of glaucoma surgery performed on angle structures. Results: The longer imaging depth and deeper tissue penetration of the 1310 nm system provided the clearest image of the TM and Schlemm's canal in the normal patient. In case 1, images pre- and post-trabectome surgery clearly showed the location and appearance of TM. In case 2, images post-canaloplasty surgery showed the location and appearance of Schlemm's canal. In case 3, images pre- and post-trabeculotomy surgery further confirms the appearance and location of the Schlemm's canal and TM. Conclusion: Operating wavelength of the FD OCT system and exact location of the scan across different meridians minimally affects the appearance of the ocular anatomy. The postoperative images of three angle glaucoma surgeries confirmed the location of Schlemm's canal and TM.

PDF Share
  1. Irshad FA, Mayfield MS, Zurakowski D, Ayyala RS. Variation in Schlemm's canal diameter and location by ultrasound biomicroscopy. Ophthalmology 2010 May;117(5):916-920.
  2. Konstantopoulos A, Hossain P, Anderson DF. Recent advances in ophthalmic anterior segment imaging: a new era for ophthalmic diagnosis? Br J Ophthalmol 2007 Apr;91(4):551-557.
  3. Sarunic MV, Asrani S, Izatt JA. Imaging the ocular anterior segment with real-time, full-range Fourier-domain optical coherence tomography. Arch Ophthalmol 2008 Apr;126(4):537-542.
  4. Asrani S, Sarunic M, Santiago C, Izatt J. Detailed visualization of the anterior segment using fourier-domain optical coherence tomography. Arch Ophthalmol 2008 Jun; 126(6):765-771.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.