April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
Comparison of Two- and Three-Dimensional Anterior Segment Optical Coherence Tomography in the Evaluation of Anterior Chamber Angle Structures
Author Affiliations & Notes
  • N. Nakakuki
    Ophthalmology, University of Tsukuba, Tsukuba, Japan
    Computational Optics and Ophthalmology Group, Ibaraki, Japan
  • K. Kawana
    Ophthalmology, University of Tsukuba, Tsukuba, Japan
    Computational Optics and Ophthalmology Group, Ibaraki, Japan
  • Y. Yasuno
    Computational Optics and Ophthalmology Group, Ibaraki, Japan
    Computational Optics Group, in the University of Tsukuba, Ibaraki, Japan
  • T. Oshika
    Ophthalmology, University of Tsukuba, Tsukuba, Japan
    Computational Optics and Ophthalmology Group, Ibaraki, Japan
  • Footnotes
    Commercial Relationships  N. Nakakuki, None; K. Kawana, None; Y. Yasuno, TOPCON Corp, C; Tomey Corp, C; Nidek, C; T. Oshika, None.
  • Footnotes
    Support  Grants-in-aid for Scientific Research 19791256 from the Japan Society for the Promotion of Science
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 5782. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      N. Nakakuki, K. Kawana, Y. Yasuno, T. Oshika; Comparison of Two- and Three-Dimensional Anterior Segment Optical Coherence Tomography in the Evaluation of Anterior Chamber Angle Structures. Invest. Ophthalmol. Vis. Sci. 2009;50(13):5782.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose: : To evaluate anterior chamber angle structures by using two- and three-dimensional anterior segment optical coherence tomography (2D- and 3D-OCT).

Methods: : A total of 68 eyes from 14 normal volunteers and 20 narrow angle patients were evaluated using 2D-OCT (Visante; Carl Zeiss Meditec, Dublin, California) and 3D-OCT (CASIA; Tomey, Aichi,Japan). The mean age was 52.6 ± 24.2 years old (mean ± standard deviation). In 2D-OCT measurements, normal and enhanced images were used. The enhanced images are created from four registered OCT images. The measurement parameters include visibility of the scleral spur (SS) and trabecular meshwork (TM), and AOD 500 (angle opening distance). The visibility of SS and TM was scored from 1 (invisible) to 4 (clearly visible).

Results: : The visibility scores for TM were 2.9 ± 0.9, 3.2 ± 0.9, 3.3 ± 0.9 in normal 2D-OCT, enhance 2D-OCT, and 3D-OCT, respectively. The score was significantly lower in normal 2D-OCT than in enhance 2D-OCT (P = 0.006, analysis of variance with Bonferroni comparison) and in 3D-OCT (P = 0.001). The visibility scores for SS were 2.2 ± 0.9, 2.6 ± 1.1, 3.1 ± 1.0 in normal 2D-OCT, enhance 2D-OCT, and 3D-OCT, respectively. The score was significantly greater in 3D-OCT than in normal and enhance 2D-OCT (P < 0.0001). There was also significant difference between normal and enhance 2D-OCT (P = 0.002). There was no significant difference in AOD 500 among the three methods (P = 0.835).

Conclusions: : The 3D-OCT allows significantly better visibility of anterior chamber angle structures than 2D-OCT. Detail analysis of trabecular meshwork and scleral spur is possible with anterior segment 3D-OCT.

Keywords: imaging/image analysis: clinical • anterior segment • anterior chamber 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×