June 2015
Volume 56, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2015
Topographic Relationship between Choroidal Watershed Zone and Idiopathic Submacular Choroidal Neovascularization
Author Affiliations & Notes
  • Ji Eun E Lee
    Ophthalmology, Pusan National University, Busan, Korea (the Republic of)
    Medical Research Institute, Pusan National University Hospital, Busan, Korea (the Republic of)
  • Boo Sup Oum
    Jung Geun Medical Eye Hospital, Busan, Korea (the Republic of)
  • Jae Jung Lee
    Ophthalmology, Pusan National University, Busan, Korea (the Republic of)
    Medical Research Institute, Pusan National University Hospital, Busan, Korea (the Republic of)
  • Min Kyu Shin
    Ophthalmology, Pusan National University, Busan, Korea (the Republic of)
    Medical Research Institute, Pusan National University Hospital, Busan, Korea (the Republic of)
  • Inyoung Chung
    Ophthalmology, Gyeongsang National University, Jinju, Korea (the Republic of)
  • Joo Eun Lee
    Ophthalmology, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, Korea (the Republic of)
  • Hyun Woong Kim
    Ophthalmology, Busan Paik Hospital, College of Medicine, Inje University, Busan, Korea (the Republic of)
  • Sang-Joon Lee
    Ophthalmology, Gospel Hospital, Kosin University, Busan, Korea (the Republic of)
  • Sung Who Park
    Ophthalmology, Pusan National University, Busan, Korea (the Republic of)
    Medical Research Institute, Pusan National University Hospital, Busan, Korea (the Republic of)
  • Ik Soo Byon
    Ophthalmology, Pusan National University, Busan, Korea (the Republic of)
    Research Institute for Convergence of Biomedical Science and Technology, Yangsan Pusan National University Hospital, Yangsan, Korea (the Republic of)
  • Footnotes
    Commercial Relationships Ji Eun Lee, None; Boo Sup Oum, None; Jae Jung Lee, None; Min Kyu Shin, None; Inyoung Chung, None; Joo Eun Lee, None; Hyun Woong Kim, None; Sang-Joon Lee, None; Sung Who Park, None; Ik Soo Byon, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2015, Vol.56, 2775. doi:
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      Ji Eun E Lee, Boo Sup Oum, Jae Jung Lee, Min Kyu Shin, Inyoung Chung, Joo Eun Lee, Hyun Woong Kim, Sang-Joon Lee, Sung Who Park, Ik Soo Byon; Topographic Relationship between Choroidal Watershed Zone and Idiopathic Submacular Choroidal Neovascularization. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):2775.

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

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Abstract
 
Purpose
 

To investigate the relationship between idiopathic choroidal neovascularization (CNV) and choroidal watershed zones (CWZ) using indocyanine green angiography (ICGA).

 
Methods
 

This study was a retrospective case series from five centers. The medical records and ICGA of 44 patients (44 eyes) who were diagnosed with idiopathic CNV were reviewed. A CWZ was defined as hypofluorescence that disappeared during the early phase of ICGA. A CWZ was classified and compared to control group of 29 eyes. The topographic relationship between the CWZ and CNV was evaluated. Visual acuity and recurrence were analyzed according to the CWZ classification.

 
Results
 

The CNV lesion was subfoveal in 16 eyes, juxtafoveal in 12 eyes, and extrafoveal in 16 eyes. A stellate CWZ was the most common type (23 eyes; 52.3%), and followed by a vertical CWZ (19 eyes; 43.2%). The CWZ classification did not differ from control group. A CWZ involved the fovea more frequently in idiopathic CNV patients (37 eyes, 88.6%) than control group (10 eyes, 34.5%, P<0.001). The topographical relationship between the CWZ and CNV was determined in 42 eyes (95.5%), as the CNV was located within the CWZ in 39 eyes and at the margin in 3 eyes. Extrafoveal CNV was within the CWZ in all eyes. At 6 months, visual acuity was significantly worse in patients with a subfoveal CNV (P=0.028) and a stellate CWZ (P=0.039).

 
Conclusions
 

A CWZ was related to idiopathic CNV topographically and the functional outcomes. Our results suggest that a CWZ is a predisposition for the development of CNV in young patients.

 
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