Evidence map›Paper›PMID 26909501›Full record

ArticleInternational ophthalmology2016

Prevalence of corneal astigmatism before cataract surgery.

Mehran Mohammadi, Mohammad Naderan, Rozhin Pahlevani, Ali Jahanrad

Abstract read
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In one paragraph

Article in International ophthalmology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 10% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Observational
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  13. Factors Predictive of Refractive Error After Toric Lens Implantation.Clinical ophthalmology (Auckland, N.Z.) · 2023
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  18. Comparison of the clinical efficacy of AcrySofExperimental and therapeutic medicine · 2020
    Article
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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 1 country.

Mehran MohammadiAJA University of Medical Sciences, Fatemi ave, 1483659342, Tehran, Iran.
Mohammad NaderanSchool of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
Rozhin PahlevaniSchool of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Ali JahanradAJA University of Medical Sciences, Fatemi ave, 1483659342, Tehran, Iran. alijahanrad@gmail.com.
Aja University of Medical Sciences · IRIran University of Medical Sciences · IRTehran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The purpose of this study was to describe and analyze the prevalence and pattern of corneal astigmatism in cataract surgery candidates. In a prospective cross-sectional study, preoperative demographics, and keratometric and refractive values of cataract surgery candidates were collected from January 2013 to December 2014. Axial length (AL) and flat and steep keratometry measurements were optically measured by a partial coherence interferometry device (IOLMaster). This study consisted of 2156 eyes of 1317 patients with a mean age of 64.92 ± 11.48 (SD) (30-88 years). The mean of AL was 23.33 ± 1.37 mm, and the mean of corneal astigmatism was 1.12 ± 1.10 diopter (D) (range 0.0-7.00), in all patients. Furthermore, the mean of flat and steep keratometry were 43.70 ± 1.70 and 44.83 ± 1.79 D, respectively. Corneal astigmatism was 1.50 D or less in 1590 eyes (73.7 %), more than 1.50 D in 566 eyes (26.2 %), 3.00 D or more in 161 eyes (7.4 %), WTR in 796 eyes (36.9 %), ATR in 1010 eyes (46.8 %), and oblique in 350 eyes (16.2 %). ATR astigmatism axis significantly increased with the increase in age. Corneal astigmatism of most cataract surgery candidates fell between 0.50 and 1.50 D. The results of our study however is confined to our demographics might provide useful data for cataract patients, surgeons, and intraocular lens manufacturers for different purposes.

Indexed as

Cataract ExtractionAdultAgedAged, 80 and overAstigmatismAxial Length, EyeCross-Sectional StudiesFemaleHumansIranMaleMiddle AgedPreoperative PeriodPrevalenceProspective StudiesCataract surgeryCorneal astigmatismIOLMasterIranPartial coherence interferometryPrevalence

Identifiers

PMID26909501
OpenAlexW2275771210

What OpenQuestion holds

Textmetadata
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.