July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
The changes in foveal avascular zone assessed using optical coherence tomography angiography and its association with visual outcome after idiopathic epiretinal membrane removal.
Jongho Park; SEUNG MIN LEE; Sung Who Park; Ji Eun E Lee; Ik Soo Byon
Author Affiliations & Notes
  • Jongho Park
    Department of Ophthalmology, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea , Yangsan, Korea (the Republic of)
  • SEUNG MIN LEE
    Department of Ophthalmology, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea , Yangsan, Korea (the Republic of)
  • Sung Who Park
    Department of Ophthalmology, Medical Research Institute, Pusan National University Hospital, Busan, South Korea , Busan, Korea (the Republic of)
    Pusan National University School of Medicine, Yangsan, South Korea, Yangsan, Korea (the Republic of)
  • Ji Eun E Lee
    Department of Ophthalmology, Medical Research Institute, Pusan National University Hospital, Busan, South Korea , Busan, Korea (the Republic of)
    Pusan National University School of Medicine, Yangsan, South Korea, Yangsan, Korea (the Republic of)
  • Ik Soo Byon
    Department of Ophthalmology, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea , Yangsan, Korea (the Republic of)
    Pusan National University School of Medicine, Yangsan, South Korea, Yangsan, Korea (the Republic of)
  • Footnotes
    Commercial Relationships   Jongho Park, None; SEUNG MIN LEE, None; Sung Who Park, None; Ji Eun Lee, None; Ik Soo Byon, None
  • Footnotes
    Support  none
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 5272. doi:
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      Jongho Park, SEUNG MIN LEE, Sung Who Park, Ji Eun E Lee, Ik Soo Byon; The changes in foveal avascular zone assessed using optical coherence tomography angiography and its association with visual outcome after idiopathic epiretinal membrane removal.. Invest. Ophthalmol. Vis. Sci. 2018;59(9):5272.

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Abstract

Purpose : To evaluate the changes in the foveal avascular zone (FAZ) of superficial capillary plexus (SCP) and deep capillary plexus (DCP) and its association with visual acuity in eyes with idiopathic epiretinal membrane (iERM).

Methods : Twenty three eyes with unilateral iERM and postoperative follow-up duration of 6 months were included in this retrospective study. The changes in the best corrected visual acuity (BCVA, logMAR), FAZ area in SCP and DCP and central subfield macular thickness (CSMT) were reviewed. The area of FAZ was assessed using the swept source optical coherence tomography angiography (SS-OCTA, DRI OCT-1, TOPCON, Tokyo, Japan) as well as the ratio of FAZs in affected and unaffected eyes.

Results : The areas of FAZs in SCP and DCP showed a significant correlation with BCVA (r = -0.464, P = 0.026 and r = -0.702, P <0.001) and CSMT (r = -0.646, P = 0.001 and r = -0.606, P = 0.002) at baseline, but did not at follow-up visits. The ratio of FAZ in SCP and DCP was also correlated with BCVA (r=-0.719, P = 0.004 and r= -0.659, P = 0.010) and CSMT (r = -0.622, P = 0.018 and r = -0.702, P = 0.005) at baseline. Mean area of FAZ in SCP significantly increased (P =0.033) but did not in DCP after surgery. The change in FAZ of SCP was statistically correlated with the change in BCVA (r = -0.338, P = 0.034).

Conclusions : The smaller area of FAZs in SCP and DCP was observed in eyes with the worse visual acuity and thicker CSMT. The enlargement of FAZ in SCP, which resulted form the relaxation of tangential contraction in macula, was significantly associated with the visual improvement after iERM removal. Assessment of FAZ using OCTA can provide the additional information of the changes in foveal microstructure in eyes with iERM.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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Copyright © 2025 Association for Research in Vision and Ophthalmology.
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