Evidence map›Paper›PMID 30450305›Full record

ArticleInternational journal of ophthalmology2018

Two-stage procedure in the management of selected cases of keratoconus: clear lens extraction with aspherical IOL implantation followed by WFG-PRK.

Waleed Abou Samra, Tharwat Mokbel, Mohammed Elwan, Sameh Saleh, Ahmed Elwehidy, Mohammed Iqbal, Adel Ellayeh

Open access · goldAbstract read
In one paragraph

Article in International journal of ophthalmology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

3 citing papers in PubMed, 10 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

7 authors at 2 institutions in 1 country.

Waleed Abou SamraDepartment of Ophthalmology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
Tharwat MokbelDepartment of Ophthalmology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
Mohammed ElwanDepartment of Ophthalmology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
Sameh SalehDepartment of Ophthalmology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
Ahmed ElwehidyDepartment of Ophthalmology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
Mohammed IqbalDepartment of Ophthalmology, Faculty of Medicine, Sohag University, Sohag 82524, Egypt.
Adel EllayehDepartment of Ophthalmology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
Mansoura University · EGSohag University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo assess the objective and subjective results of a two-stage procedure for management of keratoconus: clear lensectomy with aspherical intraocular lens (IOL) implantation followed by wave front-guided photorefractive keratotomy (WFG-PRK).

methodsThis prospective interventional non-randomized study included patients aged 35 years old or more with grade I and II stable keratoconus, a clear visual axis, minimal corneal thickness (MCT) 420 µm or more and average keratometric reading (K) less than 54 diopter (D). Refraction of all selected eyes should be -8.00 D sphere or more with less than -6.00 D cylinder and could be corrected two lines or more with spectacles or contact lenses. All studied eyes underwent a two-stage approach treatment: first refractive lens exchange and aspherical IOL implantation followed, after at least 3mo, by WFG-PRK. Pre and postoperative complete ophthalmological examination were performed. Topographical, visual and aberrometric results were recorded and evaluated during 6mo follow up period. Moreover, patient satisfaction and other subjective outcomes were also analyzed.

resultsThe 13 eyes of 11 patients diagnosed with stable keratoconus and aged from 39 to 49y (42.4±6.2y) were enrolled in the study. At baseline, 8 eyes had grade I and 5 eyes had grade II keratoconus. The manifest sphere was -10.3±4.2 D (ranged from -8.0 to -14.0 D) and the manifest cylinder was -4.2±1.2 D (ranged from -1.75 to -5.50 D). After the two-stage procedure, sphere and cylinder reduced significantly to -0.43±0.22 D and -1.3±0.72 D respectively (

conclusionTwo-stage approach (clear lens exchange with monofocal IOL followed by WFG-PRK) in selected cases of keratoconus is a safe, effective and highly predictable procedure with satisfactory visual and refractive results.

Indexed as

clear lensectomykeratoconuswave front-guided photorefractive keratotomy

Identifiers

PMID30450305
PMCPMC6232328
OpenAlexW2906149081

What OpenQuestion holds

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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.