Evidence map›Paper›PMID 31989400›Full record

Observational studyJapanese journal of ophthalmology2020

Spatial distribution of macular pigment estimated by autofluorescence imaging in elderly Japanese individuals.

Akira Obana, Yuko Gohto, Hiroyuki Sasano, Werner Gellermann, Mohsen Sharifzadeh, Takahiko Seto, Paul S Bernstein

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in Japanese journal of ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.8field-weighted citation impact, top 34% 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

15 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Assessing the role of macular pigment optical volume in non-neovascular age-related macular degeneration: associations with rod-mediated dark adaptation and disease progression.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Observational
  3. Article
  4. Observational
  5. Article
  6. Article
  7. Observational
  8. Age-Related Macular Degeneration, a Mathematically Tractable Disease.Investigative ophthalmology & visual science · 2024
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. 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

7 authors at 3 institutions in 2 countries.

Akira ObanaDepartment of Ophthalmology, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Naka-ku, Hamamatsu, Shizuoka, 430-8558, Japan. obana@sis.seirei.or.jp.
Yuko GohtoDepartment of Ophthalmology, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Naka-ku, Hamamatsu, Shizuoka, 430-8558, Japan.
Hiroyuki SasanoDepartment of Ophthalmology, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Naka-ku, Hamamatsu, Shizuoka, 430-8558, Japan.
Werner GellermannLongevity Link Corporation, Salt Lake City, USA.
Mohsen SharifzadehLongevity Link Corporation, Salt Lake City, USA.
Takahiko SetoDepartment of Ophthalmology, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Naka-ku, Hamamatsu, Shizuoka, 430-8558, Japan.
Paul S BernsteinDepartment of Ophthalmology and Visual Sciences, Moran Eye Center, University of Utah School of Medicine, Salt Lake City, USA.
Seirei Hamamatsu General Hospital · JPLongevity Biotech (United States) · USUniversity of Utah · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the spatial distribution types of macular pigment (MP) in elderly Japanese individuals and to consider their origin. STUDY

designObservational case series.

methodsLocal MP optical density (MPOD) at some eccentricities and MP volume were measured using the MPOD module of a MultiColor Spectralis in 96 pseudophakic eyes of 96 participants (age range, 52-86 years; mean age, 72.8 ± 8.3 years). The MP distribution types were determined from the MP spatial profiles. The retinal thickness (RT) at the foveal center, at both 0.5° and 0.9° eccentricities, and the foveal width were measured using optical coherence tomography.

resultsThe mean local MPOD at the foveal center was 0.79. Spatial distribution was classified into four types: central peak (24.0%), ring-like (40.6%), intermediate (22.9%), and central dip (12.5%). The ring-like type was the most frequent in these Japanese participants. The central-peak type showed lower MPOD than did the other types in the area outside 0.9°. The ring-like type occurred frequently in eyes with small RT at 0.5° and wider foveal width. A rough contour of the Müller cell cone was found more frequently in the central-dip type than in the other types.

conclusionsThe present characteristics of the different distribution patterns could be explained by the hypothesis that MP presents mainly in the Müller cell cone within 0.5° and in Müller cells in the outer and inner plexiform layers in the area outside 0.5°. The anatomic characteristics of Müller cells at the fovea and parafovea likely affect the MP distribution.

Indexed as

AdultAgedAged, 80 and overFemaleFluorescein AngiographyFollow-Up StudiesFundus OculiHumansJapanMacula LuteaMacular PigmentMaleMiddle AgedRetinal Pigment EpitheliumRetrospective StudiesTomography, Optical CoherenceMacular PigmentAutofluorescence spectroscopyDistribution patternsMacular pigmentMüller cellRetinal anatomy

Identifiers

PMID31989400
OpenAlexW3003847175

What OpenQuestion holds

Textmetadata
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.