Evidence map›Paper›PMID 31907015›Full record

ArticleBMC ophthalmology2020

Inverted internal limiting membrane flap technique versus complete internal limiting membrane peeling in large macular hole surgery: a comparative study.

Prithvi Ramtohul, Eric Parrat, Danièle Denis, Umberto Lorenzi

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
2.7field-weighted citation impact, top 8% 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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.

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  20. Update on surgical management of complex macular holes: a review.International journal of retina and vitreous · 2021
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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 3 institutions in 2 countries.

Prithvi RamtohulCentre Hospitalier Universitaire de l'Hôpital Nord, chemin des Bourrely, 13015, Marseille, France. pramtohul@free.fr.ORCID http://orcid.org/0000-0003-4927-4136
Eric ParratDepartment of Ophthalmology, University Medical Center of Pointe-à-Pitre, Les Abyme, Guadeloupe.
Danièle DenisCentre Hospitalier Universitaire de l'Hôpital Nord, chemin des Bourrely, 13015, Marseille, France.
Umberto LorenziCentre Hospitalier Universitaire de Rouen, 37 Boulevard Gambetta, 76000, Rouen, France.
Hôpital Nord · FRCentre Hospitalier Universitaire de Rouen · FRCentre Hospitalier Universitaire Pointe-à-Pitre · GP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo compare the anatomical and functional outcomes of the inverted internal limiting membrane (ILM) flap technique and the complete ILM removal in the treatment of large stage 4 macular hole (MH) > 400 μm and to evaluate reconstructive anatomical changes in foveal microstructure using spectral-domain optical coherence tomography.

methodsThis is a retrospective, consecutive, nonrandomized comparative study of patients affected by idiopathic, myopic or traumatic stage 4 MH (minimum diameter > 400 μm) treated with 25-gauge pars-plana vitrectomy with either complete ILM peeling (n = 23, Group 1) or inverted ILM flap technique (n = 23, Group 2), between August 2016 and August 2018. Main outcomes measured were the MH closure rate assessed by spectral-domain optical coherence tomography and the best-corrected visual acuity (BCVA) at six months. Foveal microstructure reconstructive changes were evaluated using SD-OCT to determine predictive factors of postoperative BCVA.

resultsClosure of MH was achieved in 16/23 cases of Group 1 (70%) and in 22/23 cases of the Group 2 (96%). Surgical failure was reported in 6 cases of Group 1 and 1 case of Group 2. The MH closure rate was significantly higher with the inverted ILM flap technique (P-value = 0.02). Average BCVA (LogMAR) changed from 1.04 ± 0.32 to 0.70 ± 0.31 in Group 1 and from 0.98 ± 0.22 to 0.45 ± 0.25 in Group 2 (P-value = 0.005) at 6 months. Improvement in BCVA (> 0.3 LogMAR units) was statistically higher in the Group 2 (P-value = 0.03). Restoration of foveal microstructure was significantly higher in the Group 2 at 6 months (52% vs 9%, P-value < 0.01). In Group 2, the integrity of the external limiting membrane at 3 months postoperatively was the only significant feature correlated with postoperative BCVA at 6 months (r = 0.562; P-Value = 0.01, forward stepwise regression analysis).

conclusionInverted ILM flap technique is more effective than the classic ILM peeling for the closure of large stage 4 MHs > 400 μm, improving both anatomical and functional outcomes. Early recovery of the external limiting membrane at 3 months is a positive predictive value of postoperative BCVA 6 months after inverted ILM flap technique.

Indexed as

AgedBasement MembraneEpiretinal MembraneFemaleFovea CentralisHumansMaleMiddle AgedRegression AnalysisRetinal PerforationsRetrospective StudiesTomography, Optical CoherenceVisual AcuityVitrectomyILM peelingInternal limiting membraneInverted ILM flap techniqueMacular holeVitrectomy

Identifiers

PMID31907015
PMCPMC6945482
OpenAlexW3000701969

What OpenQuestion holds

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LicenceCC BY
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.