Evidence map›Paper›PMID 34001996›Full record

Observational studyScientific reports2021

Changes in retinal layers in type 1 diabetes mellitus without retinopathy measured by spectral domain and swept source OCTs.

Elvira Orduna-Hospital, Ana Sanchez-Cano, Lorena Perdices, Javier Acha, Elena María Lopez-Alaminos, Isabel Pinilla

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Scientific reports, 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
2.6field-weighted citation impact, top 10% 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, 15 citations in OpenAlex.

  1. Article
  2. Molecular stress and neurovascular injury in the diabetic retina.The Journal of clinical investigation · 2026
    Review
  3. Article
  4. Early Retinal Changes Detected Using Optical Coherence Tomography Angiography in Youth with Type 1 Diabetes Mellitus: A Case-Control Study.Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde · 2026
    Article
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  9. Review
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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

6 authors at 2 institutions in 1 country.

Elvira Orduna-HospitalAragon Institute for Health Research (IIS Aragon), 50009, Zaragoza, Spain. elvisabi14@hotmail.com.
Ana Sanchez-CanoAragon Institute for Health Research (IIS Aragon), 50009, Zaragoza, Spain.
Lorena PerdicesAragon Institute for Health Research (IIS Aragon), 50009, Zaragoza, Spain.
Javier AchaAragon Institute for Health Research (IIS Aragon), 50009, Zaragoza, Spain.
Elena María Lopez-AlaminosDepartment of Endocrinology, Miguel Servet University Hospital, 50009, Zaragoza, Spain.
Isabel PinillaAragon Institute for Health Research (IIS Aragon), 50009, Zaragoza, Spain.
Hospital Universitario Miguel Servet · ESUniversidad de Zaragoza · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To evaluate changes in inner retinal layer (IRL) thicknesses in patients with type 1 diabetes mellitus (DM1) with no diabetic retinopathy (DR) using two different optical coherence tomography (OCT) devices. Ninety DM1 and 60 healthy eyes were evaluated using spectral domain (SD)-OCT and swept source (SS)-OCT to measure changes in the retinal nerve fiber layer (RNFL), ganglion cell layer (GCL), inner plexiform layer (IPL) and inner nuclear layer (INL) thicknesses in all Early Treatment of Diabetic Retinopathy Study (ETDRS) macular areas. Functional tests were performed in both groups, including ETDRS with 100, 2.5 and 1.25% contrast, and color vision. The mean ages were 42.93 ± 13.62 and 41.52 ± 13.05 years in the diabetic and control groups, respectively. Visual acuity (VA) with ETDRS 1.25% was lower in the DM1 patients. Both ETDRS 2.5% and color vision were lower in the DM1 group but did not reach statistical significance. Retinal thicknesses in the central area and in the vertical outer areas were higher in the DM1 group. Differences were found in the IRL with no changes in the outer ones. Long-term DM1 patients with no DR maintained visual function, with a decrease in VA with 1.25% ETDRS contrast. Macular thickness measurements were higher using Spectralis SD-OCT than DRI Triton SS-OCT, and DM1 patients had a decrease in IRL thickness, especially in the GCL at the parafoveal level, generating thinning of the RNFL in the peripheral areas. There were no differences in outer retinal layer (ORL) thickness.

Indexed as

Visual AcuityAdultAgedCase-Control StudiesDiabetes Mellitus, Type 1FemaleGlycated HemoglobinHealthy VolunteersHumansMacula LuteaMaleMiddle AgedProspective StudiesRetinal NeuronsRetinal Pigment EpitheliumTomography, Optical CoherenceGlycated Hemoglobinhemoglobin A1c protein, human

Identifiers

PMID34001996
PMCPMC8129145
OpenAlexW3163898008

What OpenQuestion holds

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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.