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Peripapillary choroidal microvasculature dropout is associated with poor prognosis in optic neuritis

 Jihei Sara Lee  ;  Sungeun Park  ;  Sung Sik Kim  ;  Chan Yun Kim  ;  Wungrak Choi  ;  Sang Yeop Lee  ;  Hyoung Won Bae 
 PLOS ONE, Vol.18(4) : e0285017, 2023-04 
Journal Title
Issue Date
Humans ; Microvessels / diagnostic imaging ; Nerve Fibers ; Optic Disk* / blood supply ; Optic Disk* / diagnostic imaging ; Optic Neuritis* / diagnostic imaging ; Prognosis ; Retinal Diseases* ; Retinal Ganglion Cells ; Tomography, Optical Coherence / methods ; Visual Fields
Purpose: To identify peripapillary choroidal microvasculature dropout (MvD) in eyes with optic neuritis and its association with longitudinal changes in retinal nerve fiber layer (RNFL) and ganglion cell-inner plexiform layer (GCIP) thicknesses following diagnosis.

Methods: A total of 48 eyes with optic neuritis was evaluated to identify the presence of peripapillary choroidal MvD, defined as a focal capillary loss with no visible microvascular network in choroidal layer, using optical coherence tomography (OCT) angiography (OCTA). Patients were divided based on the presence of MvD. OCT and standard automated perimetry (SAP) conducted at 1, 3 and 6 months follow-up were analyzed.

Results: MvD was identified in 20 of 48 eyes (41.7%) with optic neuritis. MvD was most commonly found in the temporal quadrant (85.0%), and peripapillary retinal vessel density in the temporal quadrant was significantly lower in eyes with MvD (P = 0.012). At 6 months follow-up, optic neuritis eyes with MvD showed significantly thinner GCIP in superior, superotemporal, inferior and inferotemporal sectors (P<0.05). No significant difference was noted in SAP parameters. The presence of MvD was significantly associated with thinner global GCIP thickness at 6 months follow-up (OR 0.909, 95% CI 0.833-0.992, P = 0.032).

Conclusion: Optic neuritis showed peripapillary choroidal microvascular impairment in the form of MvD. MvD was associated with structural deterioration at macular GCIP. Further studies are necessary to identify the causal relationship between microvascular impairment and retinal nerve fiber layer damage in optic neuritis.

Copyright: © 2023 Lee et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chan Yun(김찬윤) ORCID logo https://orcid.org/0000-0002-8373-9999
Park, Sung Eun(박성은)
Bae, Hyoung Won(배형원) ORCID logo https://orcid.org/0000-0002-8421-5636
Lee, Sang Yeop(이상엽) ORCID logo https://orcid.org/0000-0002-3834-7953
Lee, Jihei Sara(이지혜)
Choi, Wungrak(최웅락) ORCID logo https://orcid.org/0000-0002-3015-2502
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