Evidence map›Paper›PMID 37768273›Full record

ArticleInvestigative ophthalmology & visual science2023

Choriocapillaris Impairment Is Associated With Delayed Rod-Mediated Dark Adaptation in Age-Related Macular Degeneration.

Deepayan Kar, Giulia Corradetti, Thomas A Swain, Mark E Clark, Gerald McGwin, Cynthia Owsley, SriniVas R Sadda, Christine A Curcio

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04112667 (Functionally Validated Structural Endpoints for Early AMD), which is not on this map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
10.6field-weighted citation impact, top 1% 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.

NCT04112667 completednot on this map

Functionally Validated Structural Endpoints for Early AMD

TypeobservationalSponsorCynthia OwsleyRan2019 to 2024Enrolled556ConditionsAge-related Macular Degeneration, AgingArmsNormal Macular Health, Early Macular Degeneration, Young Normals
3 · Its place in the literature

Who cites it

35 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Article
  3. Impaired Rod-Mediated Vision is the Functional Hallmark of Ageing and Early and Intermediate Age-Related Macular Degeneration.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Article
  4. An siRNA targetingMolecular therapy. Nucleic acids · 2026
    Article
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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

8 authors at 2 institutions in 1 country.

Deepayan KarDepartment of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States.
Giulia CorradettiDoheny Eye Institute, Los Angeles, California, United States.
Thomas A SwainDepartment of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States.
Mark E ClarkDepartment of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States.
Gerald McGwinDepartment of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States.
Cynthia OwsleyDepartment of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States.
SriniVas R SaddaDoheny Eye Institute, Los Angeles, California, United States.
Christine A CurcioDepartment of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States.
University of Alabama at Birmingham · USUniversity of California, Los Angeles · US

Funding

Visual Phenotyping CoreP30EY003039 · NEI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Paul Douglas Gamlin · 1985 to 2026
$16.9M
Functionally Validated Structural Endpoints for Early AMDR01EY029595 · NEI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI CURCIO, CHRISTINE A, OWSLEY, CYNTHIA · 2019 to 2023
$4.1M
A hyperspectral approach to RPE fluorophores in AMDR01EY027948 · NEI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI ACH, THOMAS, CURCIO, CHRISTINE A · 2017 to 2025
$3.8M
NEI NIH HHS P30 EY003039NEI NIH HHS R01 EY027948NEI NIH HHS R01 EY029595
6 · The paper itself

Abstract

Purpose: Progress toward treatment and prevention of age-related macular degeneration (AMD) requires imaging end points that relate to vision. We investigated choriocapillaris flow signal deficits (FD%) and visual function in eyes of individuals aged ≥60 years, with and without AMD. Methods: One eye of each participant in the baseline visit of the Alabama Study on Early Age-Related Macular Degeneration 2 (ALSTAR2; NCT04112667) was studied. AMD presence and severity was determined using the Age-Related Eye Disease Study (AREDS) grading system. FD% was quantified using macular spectral domain optical coherence tomography angiography (OCTA) scans. Vision tests included rod-mediated dark adaptation (RMDA), best-corrected visual acuity, and contrast sensitivity (photopic and mesopic), and microperimetric light sensitivity (scotopic, mesopic, and photopic). Presence of subretinal drusenoid deposits (SDD) was determined using multimodal imaging. Results: In 410 study eyes of 410 participants (mean [SD] age = 71.7 years [5.9]), FD% was higher in early AMD (mean [SD] = 54.0% [5.5], N = 122) and intermediate AMD (59.8% [7.4], N = 92), compared to normal (52.1% [5.3], N = 196) eyes. Among visual functions evaluated, RMDA showed the strongest association with FD% (r = 0.35, P < 0.0001), followed by contrast sensitivity (r = -0.22, P < 0.0001). Eyes with SDD had worse FD% (58.3% [7.4], N = 87), compared to eyes without SDD (53.4% [6.0], N = 323, P = < 0.0001). Conclusions: Choriocapillaris FD% were associated with AMD severity and with impaired vision, especially RMDA. Reduced metabolic transport and exchange across the choriocapillaris-Bruch's membrane retinal pigment epithelium (RPE) complex, a causal factor for high-risk soft drusen formation, also may impair photoreceptor sustenance from the circulation. This includes retinoid resupply, essential to dynamic rod function.

Indexed as

Macular DegenerationRetinal DrusenChoroidDark AdaptationHumansRetinaTomography, Optical Coherence

Identifiers

PMID37768273
PMCPMC10540875
OpenAlexW4387115631

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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.