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Published in: International Ophthalmology 1/2021

01-01-2021 | Angiography | Original Paper

Ocular microcirculation changes, measured with laser speckle flowgraphy and optical coherence tomography angiography, in branch retinal vein occlusion with macular edema treated by ranibizumab

Authors: Toshifumi Asano, Hiroshi Kunikata, Masayuki Yasuda, Koji M. Nishiguchi, Toshiaki Abe, Toru Nakazawa

Published in: International Ophthalmology | Issue 1/2021

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Abstract

Purpose

This study searched for early predictive vascular biomarkers for visual outcomes in eyes with macular edema caused by branch retinal vein occlusion (BRVOME).

Methods

Twenty-four eyes of 24 subjects with BRVOME were treated with the intravitreal injection of ranibizumab (IVR) for at least 6 months. We measured mean blur rate (MBR) in the optic nerve head (ONH) and vessel density (VD) in the macula with laser speckle flowgraphy and optical coherence tomography angiography, respectively.

Results

Six-month post-IVR best-corrected visual acuity (BCVA) was correlated positively with age, pre-IVR BCVA, 1-month post-IVR BCVA, 3-month post-IVR BCVA and pre-IVR systolic blood pressure (P < 0.001, P < 0.001, P < 0.001, P < 0.001 and P = 0.02, respectively) and negatively with pre-IVR overall MBR, 1-month post-IVR overall MBR, 6-month post-IVR overall MBR, 3-month post-IVR deep retinal capillary plexus (DCP) VD and 6-month post-IVR DCP VD (P = 0.03, P = 0.03, P = 0.02, P = 0.01 and P = 0.005, respectively). Furthermore, a multiple regression analysis showed that pre-IVR overall MBR (β =  − 0.67, P = 0.009) was among independent prognostic factors predicting 6-month post-IVR BCVA. Six-month post-IVR DCP VD was also correlated with overall MBR at all time points.

Conclusion

ONH blood flow may be a pre-IVR biomarker of both visual outcomes and post-IVR deep macular microcirculation in eyes with BRVOME.
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Metadata
Title
Ocular microcirculation changes, measured with laser speckle flowgraphy and optical coherence tomography angiography, in branch retinal vein occlusion with macular edema treated by ranibizumab
Authors
Toshifumi Asano
Hiroshi Kunikata
Masayuki Yasuda
Koji M. Nishiguchi
Toshiaki Abe
Toru Nakazawa
Publication date
01-01-2021
Publisher
Springer Netherlands
Published in
International Ophthalmology / Issue 1/2021
Print ISSN: 0165-5701
Electronic ISSN: 1573-2630
DOI
https://doi.org/10.1007/s10792-020-01562-7

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