Evidence map›Paper›PMID 32792330›Full record

ArticleJournal of optometry

Open versus closed view autorefraction in young adults.

Manbir Nagra, Amna Akhtar, Byki Huntjens, Peter Campbell

Open access · goldAbstract read
In one paragraph

Article in Journal of optometry. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.6field-weighted citation impact, top 31% 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

9 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
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  5. Retinoscopes: Past and present.World journal of methodology · 2024
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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

4 authors at 2 institutions in 1 country.

Manbir NagraVision and Eye Research Institute, Anglia Ruskin University, Cambridge, UK. Electronic address: nagra.manbirk@gmail.com.
Amna AkhtarCity, University of London, Centre for Applied Vision Research, School of Health Sciences, Northampton Square, London, EC1V 0HB, United Kingdom.
Byki HuntjensCity, University of London, Centre for Applied Vision Research, School of Health Sciences, Northampton Square, London, EC1V 0HB, United Kingdom.
Peter CampbellCity, University of London, Centre for Applied Vision Research, School of Health Sciences, Northampton Square, London, EC1V 0HB, United Kingdom.
City, University of London · GBAnglia Ruskin University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWhile there are numerous studies comparing open-view autorefractors to subjective refraction or other open-view autorefractors, most studies between closed and open-view autorefraction tend to focus on children rather than young adults. The aim of this study was to determine the concordance in non-cycloplegic refractive error between two modern objective autorefractors: the closed-view monocular Topcon TRK-2P and the binocular open-view Grand Seiko WR-5500.

methodsFifty young adults aged 20-29 years (mean age 22 ± 1.6 years) underwent non-cycloplegic autorefraction using the Grand Seiko WAM-5500 (open view) and Topcon TRK-2P (closed-view) autorefractors on both eyes. Findings were expressed as the isolated spherical component and were also converted from clinical to vector notation: Mean Spherical Error (MSE) and the astigmatic components J0 and J45.

resultsMean MSE ± SD was -1.00 ± 2.40D for the Grand Seiko WAM-5500 compared to -1.23 ± 2.29D for the Topcon TRK-2P. Up to seventy-six percent of the cohort had mean spherical errors from the Topcon TRK-2P which fell within ±0.50D of the Grand Seiko reading and 58% fell within ±0.25D. Mean differences between the two instruments were statistically significant for all components (J0, spherical, and MSE) (p < 0.01), except J45 (p > 0.05).

conclusionsThe differences in non-cycloplegic MSE between these two instruments are small, but statistically significant. From a clinical perspective the Topcon TRK-2P may serve as a useful starting point for subjective refraction, but additional work is needed to help further minimise differences between the instruments.

Indexed as

Refraction, OcularRefractive ErrorsAdultChildEyeHumansReproducibility of ResultsVision TestsYoung AdultAccommodationAstigmatismAutorefractorMyopiaRefractive error

Identifiers

PMID32792330
PMCPMC7752987
OpenAlexW3048618298

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.