Evidence map›Paper›PMID 33494090›Full record

ArticleMedical principles and practice : international journal of the Kuwait University, Health Science Centre2021

Visual Acuity Outcomes after Phacoemulsification in Eyes with Good Visual Acuity before Cataract Surgery.

Nikolaos Dervenis, Anna Praidou, Panagiotis Dervenis, Dimitrios Chiras, Brian Little

Open access · diamondAbstract read
In one paragraph

Article in Medical principles and practice : international journal of the Kuwait University, Health Science Centre, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

5 citing papers in PubMed, 14 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 2 institutions in 2 countries.

Nikolaos DervenisMoorfields Eye Hospital, London, United Kingdom.
Anna PraidouMoorfields Eye Hospital, London, United Kingdom.
Panagiotis DervenisSchool of Medicine, University of Thessaly, Larissa, Greece.
Dimitrios ChirasMoorfields Eye Hospital, London, United Kingdom.
Brian LittleMoorfields Eye Hospital, London, United Kingdom.
Moorfields Eye Hospital · GBUniversity of Thessaly · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveto analyse cataract surgery outcomes and related factors in eyes presenting with good visual acuity. SUBJECT AND

methodsA retrospective longitudinal study of patients undergoing phacoemulsification between 2014 and 2018 in Moorfields Eye Hospital was conducted. Pre- and post-operative visual acuities were analysed. Inclusion criteria were age ≥40 years and pinhole visual acuity ≥6/9 pre-operatively. Exclusion criteria were no post-operative visual acuity data. The visual acuity change variable was also defined according to post-operative visual acuity being above or below the Snellen 6/9 threshold.

results2,720 eyes were included. The unaided logMAR visual acuity improved from 0.54 to 0.20 (p < 0.001), the logMAR visual acuity with glasses improved from 0.35 to 0.05 (p < 0.001), and the logMAR pinhole visual acuity improved from 0.17 to 0.13 (p < 0.001); 8.1% of patients had Snellen visual acuity <6/9 post-operatively. Mean follow-up period was 23.6 ± 9.9 days. In multivariate analysis, factors associated with visual acuity <6/9 post-operatively were age (OR = 0.96, 95% confidence interval [CI] [0.95, 0.98], p < 0.001), vitreous loss (OR = 0.21, 95% CI [0.08, 0.56], p = 0.002), and iris trauma (OR = 0.28, 95% CI [0.10, 0.82] p = 0.02).

conclusionsVisual acuity improved significantly, although at least 8.1% of them did not reach their pinhole preoperative visual acuity. Worse visual acuity outcomes were associated with increasing age, vitreous loss, and iris trauma. The 6/9 vision threshold may not be able to accurately differentiate those who may benefit from cataract surgery and those who may not.

Indexed as

CataractCataract ExtractionPhacoemulsificationAdultAgedFemaleHumansLongitudinal StudiesMaleMiddle AgedRetrospective StudiesVisual AcuityClear lens extractionIris traumaVitreous loss

Identifiers

PMID33494090
PMCPMC8280449
OpenAlexW3122429583

What OpenQuestion holds

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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.