Evidence map›Paper›PMID 30997401›Full record

ArticleBMJ open ophthalmology2019

Dispersive viscosurgical devices demonstrate greater efficacy in protecting corneal endothelium in vitro.

Timur Mert Yildirim, Gerd U Auffarth, Hyeck-Soo Son, Ramin Khoramnia, Donald John Munro, Patrick R Merz

Abstract read
In one paragraph

Article in BMJ open ophthalmology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
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

13 citing papers in PubMed.

  1. Trial
  2. The soft-shell technique in eyes with a shallow anterior chamber - a randomized trial on the influence of the ophthalmic viscosurgical device.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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  12. Modified capsulorhexis for fiuid-filled mature cataracts.Medical hypothesis, discovery & innovation ophthalmology journal · 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

6 authors.

Timur Mert YildirimThe David J Apple International Laboratory for Ocular Pathology, Heidelberg University Eye Clinic, Heidelberg, Germany.ORCID 0000-0002-3687-5082
Gerd U AuffarthThe David J Apple International Laboratory for Ocular Pathology, Heidelberg University Eye Clinic, Heidelberg, Germany.
Hyeck-Soo SonThe David J Apple International Laboratory for Ocular Pathology, Heidelberg University Eye Clinic, Heidelberg, Germany.ORCID 0000-0003-1065-4035
Ramin KhoramniaThe David J Apple International Laboratory for Ocular Pathology, Heidelberg University Eye Clinic, Heidelberg, Germany.
Donald John MunroThe David J Apple International Laboratory for Ocular Pathology, Heidelberg University Eye Clinic, Heidelberg, Germany.
Patrick R MerzThe David J Apple International Laboratory for Ocular Pathology, Heidelberg University Eye Clinic, Heidelberg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveDuring phacoemulsification, the corneal endothelium is protected by an ophthalmic viscosurgical device (OVD). In this in vitro study, we assessed six different OVDs for their effectiveness in protecting the corneal endothelium. METHODS AND ANALYSIS: Phacoemulsification was performed in cadaver eyes of young pigs. Five syringe units of six different OVDs were tested (Healon EndoCoat, Viscoat, Methylvisc, Healon, Healon GV, ProVisc). After surgery, the area of endothelium coated with OVD was determined in relation to the total endothelial surface. Additionally, an endothelial cell count was obtained. As a control, an endothelial cell count was obtained from freshly trephined corneas. Statistical analysis was performed using the Mann-Whitney U test and the Spearman correlation.

resultsThe least postoperative endothelial coating and cell count were observed in the cohesive OVDs while the dispersive OVDs showed statistically significant higher values. Healon EndoCoat and Viscoat yielded a coating area of 86 (85-92)% and 85 (85-90)%, respectively. Endothelial cell count was highest in the two dispersive groups with 4065 (3928-4088) cells/mm

conclusionDispersive OVDs from this study showed greater adherence to the endothelial surface than the cohesive ones. Furthermore, postoperative endothelial cell counts of corneas treated with dispersive OVDs were higher than of corneas treated with cohesive OVDs. Our in vitro results suggest that dispersive OVDs protect the corneal endothelium better during phacoemulsification than cohesive OVDs.

Indexed as

corneal endothelium protectionophthalmic viscosurgical devicephacoemulsification

Identifiers

PMID30997401
PMCPMC6440605

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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.