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ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2013

Different phenotypes of the appearance of the outer plexiform layer on optical coherence tomography.

Yanling Ouyang, Alexander C Walsh, Pearse A Keane, Florian M Heussen, Rajeev K R Pappuru, Srinivas R Sadda

Abstract readCase Reports
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In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

19 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Clinical anatomy of the macula.Medical hypothesis, discovery & innovation ophthalmology journal · 2025
    Review
  4. Review
  5. Article
  6. Article
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  8. Evaluation of retinal vessel quantity within individual retinal structural layers using optical coherence tomography angiography.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Multicenter reliability of semiautomatic retinal layer segmentation using OCT.Neurology(R) neuroimmunology & neuroinflammation · 2018
    Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Observational
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

6 authors.

Yanling OuyangDoheny Eye Institute and Department of Ophthalmology, Keck School of Medicine of the University of Southern California, 1450 San Pablo Street, Los Angeles, CA, 90033, USA.
Alexander C Walsh
Pearse A Keane
Florian M Heussen
Rajeev K R Pappuru
Srinivas R Sadda

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo present a selected case series of different phenotypes of the normal outer plexiform layer (OPL) visualized by optical coherence tomography (OCT).

methodsFive cases were selected to represent the spectrum of appearances of the OPL in this case series. Categorical descriptions of each manifestation were then developed. Additional SD-OCT scans were obtained from a normal volunteer to further support the hypothesis.

resultsThe inner one-third of the OPL typically appears hyperreflective on OCT, while the outer two-thirds (Henle fiber layer) may have a more varied appearance. Six different phenotypes of Henle fiber layer reflectivity were noted in this series, and classified as: bright, columnar, dentate, delimited, indistinct, and dark. The brightness of the Henle fiber layer appears to depend on the geometric angle between the OCT light beam and the axonal fibers in this portion of the OPL. This angle appears to be a function of the natural orientation of the Henle fiber layer tissue (θN), the existence of subretinal pathology that alters the angle of the neurosensory retina (θ(P)), and the tilt angle of the tissue on the B-scan (θ(T)) due to decentered OCT acquisition.

conclusionsSince accurate interpretation of the OPL/ONL boundary is of vital importance to study the thickness of ONL, location of cystoid lesions, hyperreflective crescents over drusen, et al., our case series may aid better understanding of the OPL appearance in SD-OCT. In the absence of clear delineation, it may be most correct to refer to indistinct OPL and ONL together as the photoreceptor nuclear axonal complex (PNAC).

Indexed as

Tomography, Optical CoherenceAdultAgedAged, 80 and overAxonsFemaleHumansMaleMiddle AgedPhenotypePhotoreceptor Cells, VertebrateRetinal Bipolar CellsRetinal DegenerationRetinal Horizontal CellsYoung Adult

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Registered trials

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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.