May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
OCT-Determined Macular Morphology in Eyes With Occult Choroidal Neovascularization Secondary to Age-Related Macular Degeneration or Secondary to Polypoidal Choroidal Vasculopathy
S. Ozawa; K. Ishikawa; H. Nishihara; T. Yamakoshi; Y. Hatta; E. Iwata; K. Takeuchi; H. Terasaki
Author Affiliations & Notes
  • S. Ozawa
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • K. Ishikawa
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • H. Nishihara
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • T. Yamakoshi
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • Y. Hatta
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • E. Iwata
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • K. Takeuchi
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • H. Terasaki
    Ophthalmology, Nagoya Univ Sch of Medicine, Nagoya, Japan
  • Footnotes
    Commercial Relationships  S. Ozawa, None; K. Ishikawa, None; H. Nishihara, None; T. Yamakoshi, None; Y. Hatta, None; E. Iwata, None; K. Takeuchi, None; H. Terasaki, None.
  • Footnotes
    Support  Grants-in Aid 18791272 (KI), 16390497 (HT), and 18390466 (HT) from the Ministry of Education, Science, Sports and Culture, Japan.
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 2228. doi:
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      S. Ozawa, K. Ishikawa, H. Nishihara, T. Yamakoshi, Y. Hatta, E. Iwata, K. Takeuchi, H. Terasaki; OCT-Determined Macular Morphology in Eyes With Occult Choroidal Neovascularization Secondary to Age-Related Macular Degeneration or Secondary to Polypoidal Choroidal Vasculopathy. Invest. Ophthalmol. Vis. Sci. 2008;49(13):2228.

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Abstract

Purpose: : To investigate the differences in the optical coherence tomography (OCT)-determined macular morphology in Japanese patients with occult choroidal neovascularization (CNV) secondary to typical age-related macular degeneration (AMD) to that in eyes with occult CNV secondary to polypoidal choroidal vasculopathy (PCV).

Methods: : One hundred thirty-seven eyes of 136 consecutive patients with only occult CNV that had not received any treatment were studied. The CNV was secondary to AMD in 53 eyes (39%) and to PCV in 84 eyes (61%). The OCT images, fluorescein angiograms (FA), and Indocyanine green angiograms (ICGA) obtained before photodynamic therapy or intravitreal injection of bevacizumab were examined. The presence or absence of serous retinal detachment (SRD) was determined from the OCT images, and pigment epithelial detachment (PED) from the FA and ICGA images. The thickness of the neurosensory retina and SRD within a 3 mm diameter circle centered on the fovea was measured with a computer algorithm which can analyze the OCT images and determine the retinal thickness.

Results: : SRDs were observed in 30/53 (57%) eyes with AMD and in 62/84 (74%) eyes with PCV (P=0.042). PEDs were seen in 20/53 (38%) eyes with AMD and in 25/84 (30%) eyes with PCV (P=0.355). The mean thickness of the SRD within a central 3 mm area was 22.4 ± 4.0 µm (mean ± SEMs) in eyes with AMD and 55.7 ± 7.6 in eyes with PCV (P=0.007). The mean thickness of the neurosensory retina within a central 3 mm area was 286.6 ± 6.2 µm in eyes with AMD and 277.7 ± 5.0 in eyes with PCV (P=0.264). The frequency of SRD >100 µm was 2/53 (4%) eyes with AMD and 19/84 (23%) eyes with PCV (P=0.003).

Conclusions: : PCV was detected in approximately 60% of the eyes with occult CNV. The frequency of the SRD was significantly higher in eyes with PCV than that in eyes with AMD, especially in eyes with large SRD. The mean thickness of the SRD was significantly greater in eyes with PCV than that in eyes with AMD.

Keywords: age-related macular degeneration • retina • imaging/image analysis: clinical 
© 2008, The Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Permission to republish any abstract or part of an abstract in any form must be obtained in writing from the ARVO Office prior to publication.
Copyright © 2025 Association for Research in Vision and Ophthalmology.
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