Retinal Capillary Network and Foveal Avascular Zone in Eyes with Vein Occlusion and Fellow Eyes Analyzed With Optical Coherence Tomography Angiography
Name
Adhi-2016-Retinal Capillary Ne.pdf
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1.46 MB
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Checksum (MD5)
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Author(s)
Adhi, Mehreen
Filho, Marco A. Bonini
Louzada, Ricardo N.
Kuehlewein, Laura
de Carlo, Talisa E.
Baumal, Caroline R.
Witkin, Andre J.
Sadda, Srinivas R.
Sarraf, David
Reichel, Elias
Date Issued
July 2016
Journal
Investigative Opthalmology & Visual Science
Publisher
Association for Research in Vision and Ophthalmology
Citation
Adhi, Mehreen et al. “Retinal Capillary Network and Foveal Avascular Zone in Eyes with Vein Occlusion and Fellow Eyes Analyzed With Optical Coherence Tomography Angiography.” Investigative Opthalmology & Visual Science 57.9 (2016): OCT486. © 2015 Association for Research in Vision and Ophthalmology
Version
Final published version
Abstract
Purpose: To evaluate the perifoveolar retinal capillary network at different depths and to quantify the foveal avascular zone (FAZ) in eyes with retinal vein occlusion (RVO) compared with their fellow eyes and healthy controls using spectral-domain optical coherence tomography angiography (SD-OCTA).
Methods: We prospectively recruited 23 patients with RVO including 15 eyes with central RVO (CRVO) and 8 eyes with branch RVO (BRVO), their fellow eyes, and 8 age-matched healthy controls (8 eyes) for imaging on prototype OCTA software within RTVue-XR Avanti. The 3 × 3 mm and 6 × 6 mm en face angiograms of superficial and deep retinal capillary plexuses were segmented. Perifoveolar retinal capillary network was analyzed and FAZ was quantified.
Results: Decrease in vascular perfusion at the deep plexus was observed in all eyes with CRVO (8/8, 100%) and BRVO (6/6, 100%) without cystoid macular edema, and in 8 of 15 (53%) and 2 of 8 (25%) of the fellow eyes, respectively. Vascular tortuosity was observed in 13 of 15 (87%) CRVO and 5 of 8 (63%) BRVO eyes. Collaterals were seen in 10 of 15 (67%) CRVO and 5 of 8 (63%) BRVO eyes. Mean FAZ area was larger in eyes with RVO than their fellow eyes (1.13 ± 0.25 mm[superscript 2] versus 0.58 ± 0.28 mm[superscript 2]; P = 0.007) and controls (1.13 ± 0.25 mm[superscript 2] versus 0.30 ± 0.09 mm[superscript 2]; P < 0.0001), and in fellow eyes of RVO patients when compared to controls (0.58 ± 0.28 mm[superscript 2] versus 0.30 ± 0.09 mm[superscript 2]; P = 0.01).
Conclusions: Spectral-domain OCTA reveals abnormalities at different levels of perifoveolar retinal capillary network and is able to quantify the FAZ in RVO. Longitudinal studies may be considered to evaluate the clinical utility of OCTA in RVO and other retinal vascular diseases.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1167/iovs.15-18907
