Evidence map›Paper›PMID 33625563›Full record

ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2021

Variation of vortex veins at the horizontal watershed in normal eyes.

Junki Hoshino, Hidetaka Matsumoto, Ryo Mukai, Kosuke Nakamura, Yosuke Arai, Yuka Kikuchi, Shoji Kishi, Hideo Akiyama

Abstract read
PubMed Publisher
In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.1field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Pachychoroid diseases of the macula: an update.Medical hypothesis, discovery & innovation ophthalmology journal · 2026
    Review
  5. Article
  6. Article
  7. Pachychoroid disease: review and update.Eye (London, England) · 2025
    Review
  8. Article
  9. Article
  10. Angiopoietin-1 Is Required for Vortex Vein and Choriocapillaris Development in Mice.Arteriosclerosis, thrombosis, and vascular biology · 2022
    Article
  11. A new insight into pachychoroid diseases: Remodeling of choroidal vasculature.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2022
    Review
  12. Article
  13. Observational
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Junki HoshinoDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Hidetaka MatsumotoDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan. hide-m@gunma-u.ac.jp.
Ryo MukaiDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Kosuke NakamuraDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Yosuke AraiDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Yuka KikuchiDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Shoji KishiDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Hideo AkiyamaDepartment of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Gunma, 371-8511, Maebashi, Japan.
Gunma University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess the vascular pattern of choroidal vortex veins at the horizontal watershed zone in normal eyes using optical coherence tomography (OCT).

methodsWe retrospectively studied 207 normal eyes of 207 patients whose fellow eyes were diagnosed with unilateral retinal diseases without choroidal involvement. Venous anastomosis between the superior and inferior vortex veins and deviation of the horizontal watershed zone were evaluated using 12 × 12-mm en face OCT images. Central choroidal thickness (CCT) was measured on B-mode OCT images.

resultsVortex vein anastomosis was observed in 92 eyes (44.4%) at the horizontal watershed zone. Superior or inferior deviation of the horizontal watershed was ascertained in 69 eyes (33.3%). The frequency of the anastomosis and deviation did not differ significantly between age groups (P = 0.56 and 0.96, respectively). Mean CCT of all eyes was 221 ± 80 μm. CCT was significantly greater in eyes with anastomosis than in those without (233 ± 73 μm vs 210 ± 83 μm, P < 0.05). However, CCT did not differ significantly between eyes with and without deviation of the horizontal watershed zone (223 ± 74 μm vs 219 ± 82 μm).

conclusionsVenous anastomosis at the horizontal watershed zone as well as superior or inferior deviation of the zone were frequently observed in normal eyes. CCT was greater in eyes with than in those without anastomosis, suggesting subclinical vortex vein congestion.

Indexed as

ChoroidTomography, Optical CoherenceFluorescein AngiographyHumansRetrospective StudiesChoroidEn face imagingNormal eyeOptical coherence tomographyVortex veinWatershed zone

Identifiers

PMID33625563
OpenAlexW3131360990

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.