Evidence map›Paper›PMID 32399859›Full record

ArticleOphthalmology and therapy2020

Unexplained Visual Loss After Silicone Oil Removal: A 7-Year Retrospective Study.

Cláudia Oliveira-Ferreira, Mariana Azevedo, Marta Silva, Ana Roca, João Barbosa-Breda, Pedro Alves Faria, Fernando Falcão-Reis, Amândio Rocha-Sousa

Open access · goldAbstract read
In one paragraph

Article in Ophthalmology and therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.7field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 31 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

8 authors at 2 institutions in 2 countries.

Cláudia Oliveira-FerreiraOphthalmology Department, Centro Hospitalar São João, Oporto, Portugal. mofclaudia@gmail.com.
Mariana AzevedoFaculty of Medicine of Porto University, Oporto, Portugal.
Marta SilvaOphthalmology Department, Centro Hospitalar São João, Oporto, Portugal.
Ana RocaFaculty of Medicine of Porto University, Oporto, Portugal.
João Barbosa-BredaOphthalmology Department, Centro Hospitalar São João, Oporto, Portugal.
Pedro Alves FariaOphthalmology Department, Centro Hospitalar São João, Oporto, Portugal.
Fernando Falcão-ReisOphthalmology Department, Centro Hospitalar São João, Oporto, Portugal.
Amândio Rocha-SousaOphthalmology Department, Centro Hospitalar São João, Oporto, Portugal.
Hospital de São João · PTUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionUnexplained visual loss after removal of silicone oil from the eye has been described. The purpose of this study is to determine the incidence of unexplained loss of visual acuity after SO removal and to provide possible explanations for this phenomenon.

methodsThis retrospective study included patients that underwent vitreoretinal surgery, at Centro Hospitalar São João, between January of 2012 and October of 2018. Inclusion criterion was vitreoretinal surgery in which the chosen endotamponade was SO, followed by removal of SO and exchange with balanced salt solution (BSS) or air. After SO removal, patients with documented loss of best corrected visual acuity (BCVA) on two or more Snellen lines were analyzed and patients in which the cause of the visual loss was identified, namely OHT (intraocular pressure > 21 mmHg), retinal re-detachment, glaucoma, retinal proliferative membrane formation, or corneal decompensation, were excluded. All patients with unexplained visual loss underwent spectral domain optical coherence tomography (SD-OCT) to exclude causes of visual reduction such as cystoid macular edema, epiretinal membrane, or ellipsoid/interdigitation zone disruption. A p value less than 0.05 was considered statistically significant.

resultsA total of 46 eyes underwent SO tamponade and SO removal during the study period. In 34.8% of the cases (n = 16) there was visual acuity loss in at least two Snellen lines. Of 46 eyes, 23.9% (n = 11) showed vision loss due to known secondary causes. Unexplained loss of visual acuity after SO removal occurred in 10.9% of cases. OHT during silicone endotamponade (p = 0.046) and silicone emulsification (p = 0.001) were identified as factors associated with unexplained visual loss after SO removal.

conclusionUnexplained loss of visual acuity after SO removal occurred in 10.9% of cases. OHT during silicone endotamponade and SO emulsification were identified as important factors in the ethology of this phenomenon.

Indexed as

Retinal detachmentSilicone oilUnexplained visual lossVitrectomy

Identifiers

PMID32399859
PMCPMC7406612
OpenAlexW3024760748

What OpenQuestion holds

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LicenceCC BY-NC
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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.