Evidence map›Paper›PMID 30941512›Full record

ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2019

Video recording and light intensity change analysis during cataract surgery using an animal model.

Hideki Fukuoka, Ruti Sella, Spencer D Fuller, Craig See, Natalie A Afshari

Abstract readVideo-Audio Media
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In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

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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

1 citing paper in PubMed.

  1. Article
4 · The record

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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.

Hideki FukuokaDepartment of Ophthalmology, Shiley Eye Institute, University of California, La Jolla, San Diego, USA, 9415 Campus Point Dr #0946, La Jolla, San Diego, CA, 92093-0946, USA.
Ruti SellaDepartment of Ophthalmology, Shiley Eye Institute, University of California, La Jolla, San Diego, USA, 9415 Campus Point Dr #0946, La Jolla, San Diego, CA, 92093-0946, USA.
Spencer D FullerDepartment of Ophthalmology, Shiley Eye Institute, University of California, La Jolla, San Diego, USA, 9415 Campus Point Dr #0946, La Jolla, San Diego, CA, 92093-0946, USA.
Craig SeeDepartment of Ophthalmology, Shiley Eye Institute, University of California, La Jolla, San Diego, USA, 9415 Campus Point Dr #0946, La Jolla, San Diego, CA, 92093-0946, USA.
Natalie A AfshariDepartment of Ophthalmology, Shiley Eye Institute, University of California, La Jolla, San Diego, USA, 9415 Campus Point Dr #0946, La Jolla, San Diego, CA, 92093-0946, USA. naafshari@ucsd.edu.ORCID http://orcid.org/0000-0002-6025-5131

Funding

Research to Prevent Blindness unrestricted grant
6 · The paper itself

Abstract

purposeTo estimate light exposure changes during cataract surgery through intraoperative images simulated from the "patient's perspective" using an animal model.

methodsIn this experimental study, a 3-mm maculostomy was performed through the posterior globe's surface of 15 porcine eyes. Eyes were fixated to a glass slide and placed over an iPad camera. Video footage of a cataract surgery was obtained through the maculostomy for each eye, keeping light exposure parameters and focus constant. Seventy-five images, five from each eye, were extracted at pre-determined points, and mean gray value (MGV), a light intensity measure, was calculated. Differences in MGV between discrete surgical steps were evaluated using multiple one-sample t-tests.

resultsThis technique allowed for the capture of a full-length cataract surgery through a 3-mm maculostomy. MGV range was 14.21-132.51. Light intensity was similar across surgeries and varied greatly through each procedure. A 24% decrease in MGV between post-hydrodissection and post-phacoemulsification stages was noted (difference - 18.36; 95% CI - 30.50 to - 6.22; p value = 0.006). A 22.4% decrease in light intensity was noted after phacoemulsification in comparison to the starting image (MGV difference - 16.78; 95% CI - 32.45 to - 1.12; p value: 0.0375). Light intensity was similar at the start and end of surgery (difference - 7.15; 95% CI - 19.35 to + 5.05; p value = 0.229).

conclusionsLight intensity changes through different steps of cataract surgery and may be minimal after phacoemulsification completion. This video and data may serve as informational and educational tools for surgeons and patients.

Indexed as

LightAnimalsCataract ExtractionDisease Models, AnimalEquipment DesignIntraoperative PeriodSwineVideo RecordingCataract surgeryCataract trainingLight intensityMaculostomyPatient education

Identifiers

PMID30941512

What OpenQuestion holds

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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.