Evidence map›Paper›PMID 23932514›Full record

ArticleOphthalmology2014

Changing incidence of lens extraction over 20 years: the Beaver Dam eye study.

Barbara E K Klein, Kerri P Howard, Kristine E Lee, Ronald Klein

Abstract read
In one paragraph

Article in Ophthalmology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.0field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 47 citations in OpenAlex.

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  9. COVID-19 and cataract surgery backlog in Medicare beneficiaries.Journal of cataract and refractive surgery · 2020
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  20. Projected prevalences of age-related eye diseases.Investigative ophthalmology & visual science · 2013
    Review
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 1 institution in 1 country.

Barbara E K KleinDepartment of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. Electronic address: kleinb@epi.ophth.wisc.edu.
Kerri P HowardDepartment of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
Kristine E LeeDepartment of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
Ronald KleinDepartment of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
University of Wisconsin–Madison · US

Funding

THE EPIDEMIOLOGY OF AGE-RELATED OCULAR DISEASEU10EY006594 · NEI · UNIVERSITY OF WISCONSIN-MADISON · PI KLEIN, RONALD · 1987 to 2018
$17.3M
NEI NIH HHS U10 EY006594
6 · The paper itself

Abstract

objectiveTo investigate trends in the incidence of lens extraction over the past 20 years.

designLongitudinal population-based cohort study.

participantsPersons who participated in the Beaver Dam Eye Study.

methodsEligible persons 43 to 84 years of age living in the city or township of Beaver Dam, Wisconsin, were recruited from 1987 through 1988. Participants were followed up every 5 years from 1993 through 1995, from 1998 through 2000, from 2003 through 2005, and from 2008 through 2010 after the baseline examination from 1988 through 1990. Examinations consisted of ocular examination with lens photography and grading; medical history; and measurements of blood pressure, height, and weight. Adjustments were made for age and gender. Values of risk variables were updated, and the incidence of lens extraction surgery was calculated in each 5-year interval.

main outcome measuresIncidence of lens extraction with regard to presence of clinically significant lens opacity and visual function.

resultsAge- and gender-adjusted incidence of lens extraction increased over the 4 intervals from 1.8% (95% confidence interval [CI], 1.3%-2.5%) in the interval between the first and second study examinations to 11.7% (95% CI, 9.9%-13.8%) in the most recent study interval. The increase in incidence of surgery was significantly higher at successive intervals in persons without clinically significant lens opacity at each preceding examination (interval 1, 0.8% [95% CI, 0.6%-1.1%]; interval 4, 9.4% [95% CI, 7.8%-11.2%]) compared with persons with at least 1 detectable type of opacity (interval 1, 9.2% [95% CI, 6.4%-13.2%]; interval 4, 16.5% [95% CI, 13.4%-20.0%]). Recency of examination was not attenuated by adjusting for additional risk factors. There was no evidence that the increased incidence in surgery was preceded by poorer visual acuity, near vision, or contrast sensitivity at the beginning of each interval.

conclusionsThe incidence of lens extraction has increased over the past 20 years in persons older than 65 years. The relative increase of surgery is higher in those without any clinically significant lens opacity and in persons with visual acuity better than 20/40 at an examination as measured 5 years before observed incidence of lens extraction.

Indexed as

AdultAgedAged, 80 and overAgingCataractCataract ExtractionCohort StudiesFemaleFollow-Up StudiesHumansIncidenceLongitudinal StudiesMaleMiddle AgedRisk FactorsVisual Acuity

Identifiers

PMID23932514
PMCPMC3830736
OpenAlexW54691244

What OpenQuestion holds

Textmetadata
LicenceTDM
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.