Evidence map›Paper›PMID 34324101›Full record

Observational studyInternational ophthalmology2021

An attempt to optimize the outcome of penetrating keratoplasty in congenital aniridia-associated keratopathy (AAK).

C J Farah, F N Fries, L Latta, B Käsmann-Kellner, B Seitz

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in International ophthalmology, 2021. 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
2.4field-weighted citation impact, top 12% 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, 24 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

5 authors at 1 institution in 1 country.

C J FarahDepartment of Ophthalmology, Saarland University Medical Center, 100 Kirrbergerstr., Building 22, 66421, Homburg, Saar, Germany. farah.chr.j@gmail.com.ORCID http://orcid.org/0000-0001-5066-2713
F N FriesDepartment of Ophthalmology, Saarland University Medical Center, 100 Kirrbergerstr., Building 22, 66421, Homburg, Saar, Germany.
L LattaDr. Rolf M. Schwiete Center for Limbal Stem Cell Research and Congenital Aniridia, Saarland University Medical Center, Homburg, Saar, Germany.
B Käsmann-KellnerDepartment of Ophthalmology, Saarland University Medical Center, 100 Kirrbergerstr., Building 22, 66421, Homburg, Saar, Germany.
B SeitzDepartment of Ophthalmology, Saarland University Medical Center, 100 Kirrbergerstr., Building 22, 66421, Homburg, Saar, Germany.
Saarland University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo propose an optimized microsurgical and medical approach to reduce the risk of complications after penetrating keratoplasty (PKP) in patients with aniridia-associated keratopathy (AAK).

methodsRetrospective observational case series of 25 PKP performed in 16 patients with AAK. Preoperative indications were endothelial decompensation and vascularized scars (68%) or graft failure (32%) due to limbal stem cell deficiency. The optimized approach included a combination of a small corneal graft size (around 7.0 mm), interrupted 10-0nylon sutures, simultaneous AMT as a patch, large bandage contact lens, temporary lateral tarsorrhaphy, postoperative autologous serum eye drops, and systemic immunosuppression. Main outcome measures included: visual acuity, transplant survival, and complications encountered during follow-up of 107 weeks on average.

resultsA complete modified keratoplasty scheme was used in 10 of 25 PKP (group 1), while at least one of the modifications was missing in the other 15 PKP (group 2). After 8 weeks of follow-up, the epithelium was closed in 23 eyes. Visual acuity improved in 19 eyes at 6 months of follow-up, and remained stable in six eyes. None of the eyes showed a decrease in visual acuity. At the last post-operative follow-up, this visual improvement persisted in 14 eyes and graft survival rate after 156 weeks (3 years) was 69% in group 1 versus 44% in group 2 (p = 0.39, log-rank test). Secondary corneal neovascularization (8%), scarring (4%), ulcer (4%), or graft rejection (8%) happened mostly in the second group which was missing at least one of the suggested modifications.

conclusionsPKP in congenital aniridia must be considered as a high-risk keratoplasty. An optimized therapeutic approach seems to be promising in order to reduce the postoperative complication rate in these most difficult eyes.

Indexed as

AniridiaCorneal DiseasesCorneal TransplantationHumansKeratoplasty, PenetratingRetrospective StudiesTreatment OutcomeAmnion membrane transplantationAniridia-associated keratopathyAutologous serumLimbal stem cell deficiencyPenetrating keratoplasty

Identifiers

PMID34324101
PMCPMC8572819
OpenAlexW3137945521

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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.