Evidence map›Paper›PMID 35417477›Full record

ArticlePloS one2022

The effect of transverse ocular magnification adjustment on macular thickness profile in different refractive errors in community-based adults.

Hamed Niyazmand, Gareth Lingham, Paul G Sanfilippo, Magdalena Blaszkowska, Maria Franchina, Seyhan Yazar, David Alonso-Caneiro, David A Mackey, Samantha Sze-Yee Lee

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

10 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Choroidal Features of Cynomolgus Macaques in Relation to Age and Axial Length.Investigative ophthalmology & visual science · 2025
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  6. Exploring the relationship between 24-2 visual field and widefield optical coherence tomography data across healthy, glaucoma suspect and glaucoma eyes.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2024
    Article
  7. Article
  8. Characterisation of the normal human ganglion cell-inner plexiform layer using widefield optical coherence tomography.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2024
    Article
  9. Article
  10. 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

9 authors at 3 institutions in 2 countries.

Hamed NiyazmandDivision of Optometry, School of Allied Health, The University of Western Australia, Perth, WA, Australia.
Gareth LinghamLions Eye Institute, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia.
Paul G SanfilippoCentre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia.
Magdalena BlaszkowskaLions Eye Institute, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia.
Maria FranchinaLions Eye Institute, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia.
Seyhan YazarLions Eye Institute, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia.
David Alonso-CaneiroContact Lens and Visual Optic Laboratory, Centre for Vision and Eye Research, School, School of Optometry and Vision Science, Queensland University of Technology, Brisbane, QLD, Australia.ORCID 0000-0002-7754-6592
David A MackeyLions Eye Institute, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia.
Samantha Sze-Yee LeeLions Eye Institute, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia.ORCID 0000-0001-6635-1098
Lions Eye Institute · AUQueensland University of Technology · AUThe University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeChanges in retinal thickness are common in various ocular diseases. Transverse magnification due to differing ocular biometrics, in particular axial length, affects measurement of retinal thickness in different regions. This study evaluated the effect of axial length and refractive error on measured macular thickness in two community-based cohorts of healthy young adults.

methodsA total of 2160 eyes of 1247 community-based participants (18-30 years; 23.4% myopes, mean axial length = 23.6mm) were included in this analysis. Macular thickness measurements were obtained using a spectral-domain optical coherence tomography (which assumes an axial length of 24.385mm). Using a custom program, retinal thickness data were extracted at the 9 Early Treatment of Diabetic Retinopathy Study (ETDRS) regions with and without correction for transverse magnificent effects, with the corrected measurements adjusting according to the participant's axial length. Linear mixed models were used to analyse the effect of correction and its interaction with axial length or refractive group on retinal thickness.

resultsThe raw measures (uncorrected for axial length) underestimated the true retinal thickness at the central macula, while overestimating at most non-central macular regions. There was an axial length by correction interaction effect in all but the nasal regions (all p<0.05). For each 1mm increase in axial length, the central macular thickness is overestimated by 2.7-2.9μm while thicknesses at other regions were underestimated by 0.2-4.1μm. Based on the raw thickness measurements, myopes have thinner retinas than non-myopes at most non-central macular. However, this difference was no longer significant when the corrected data was used.

conclusionIn a community-based sample, the raw measurements underestimate the retinal thickness at the central macula and overestimate the retinal thickness at non-central regions of the ETDRS grid. The effect of axial length and refractive error on retinal thickness is reduced after correcting for transverse magnification effects resulting from axial length differences.

Indexed as

Diabetic RetinopathyMacula LuteaMyopiaRefractive ErrorsBiometryHumansRefraction, OcularTomography, Optical CoherenceYoung Adult

Identifiers

PMID35417477
PMCPMC9007368
OpenAlexW4224072479

What OpenQuestion holds

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LicenceCC BY
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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.