Evidence map›Paper›PMID 30511784›Full record

ArticleHuman brain mapping2019

Aberrant visual pathway development in albinism: From retina to cortex.

Sarim Ather, Frank Anthony Proudlock, Thomas Welton, Paul S Morgan, Viral Sheth, Irene Gottlob, Rob A Dineen

Open access · greenAbstract read
In one paragraph

Article in Human brain mapping, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 19% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

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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 4 institutions in 1 country.

Sarim AtherNuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom.ORCID 0000-0001-9614-5033
Frank Anthony ProudlockUniversity of Leicester Ulverscroft Eye Unit, Robert Kilpatrick Clinical Sciences Building, Leicester, United Kingdom.
Thomas WeltonRadiological Sciences, Division of Clinical Neuroscience, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.
Paul S MorganSir Peter Mansfield Imaging Centre, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.
Viral ShethUniversity of Leicester Ulverscroft Eye Unit, Robert Kilpatrick Clinical Sciences Building, Leicester, United Kingdom.
Irene GottlobUniversity of Leicester Ulverscroft Eye Unit, Robert Kilpatrick Clinical Sciences Building, Leicester, United Kingdom.
Rob A DineenRadiological Sciences, Division of Clinical Neuroscience, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.ORCID 0000-0002-9523-2546
University of Leicester · GBUniversity of Nottingham · GBNottingham University Hospitals NHS Trust · GBNuffield Orthopaedic Centre · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Albinism refers to a group of genetic abnormalities in melanogenesis that are associated neuronal misrouting through the optic chiasm. We perform quantitative assessment of visual pathway structure and function in 23 persons with albinism (PWA) and 20 matched controls using optical coherence tomography (OCT), volumetric magnetic resonance imaging (MRI), diffusion tensor imaging and visual evoked potentials (VEP). PWA had a higher streamline decussation index (percentage of total tractography streamlines decussating at the chiasm) compared with controls (Z = -2.24, p = .025), and streamline decussation index correlated weakly with inter-hemispheric asymmetry measured using VEP (r = .484, p = .042). For PWA, a significant correlation was found between foveal development index and total number of streamlines (r = .662, p < .001). Significant positive correlations were found between peri-papillary retinal nerve fibre layer thickness and optic nerve (r = .642, p < .001) and tract (r = .663, p < .001) width. Occipital pole cortical thickness was 6.88% higher (Z = -4.10, p < .001) in PWA and was related to anterior visual pathway structures including foveal retinal pigment epithelium complex thickness (r = -.579, p = .005), optic disc (r = .478, p = .021) and rim areas (r = .597, p = .003). We were unable to demonstrate a significant relationship between OCT-derived foveal or optic nerve measures and MRI-derived chiasm size or streamline decussation index. Our novel tractographic demonstration of altered chiasmatic decussation in PWA corresponds to VEP measured cortical asymmetry and is consistent with chiasmatic misrouting in albinism. We also demonstrate a significant relationship between retinal pigment epithelium and visual cortex thickness indicating that retinal pigmentation defects in albinism lead to downstream structural reorganisation of the visual cortex.

Indexed as

AdultAlbinismDiffusion Tensor ImagingEvoked Potentials, VisualFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedRetinaTomography, Optical CoherenceVisual CortexVisual Pathwaysalbinismdiffusion tensor imagingmagnetic resonance imagingoptical coherence tomographyvisual pathway

Identifiers

PMID30511784
PMCPMC6865554
OpenAlexW2903445676

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.