Evidence map›Paper›PMID 33261575›Full record

Observational studyBMC ophthalmology2020

Preloaded vs manually loaded IOL delivery systems in cataract surgery in the largest ambulatory surgery center of northwestern China: an efficiency analysis.

Yazhen Wu, Hong Yan, Weijia Yan

Abstract readObservational Study
In one paragraph

Observational study in BMC ophthalmology, 2020. 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
–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

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.

  1. Article
  2. Observational
  3. Article
  4. Observational
  5. Article
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

3 authors.

Yazhen WuXi'an Fourth Hospital, Shaanxi Eye Hospital, Affiliated Xi'an Fourth Hospital, Northwestern Polytechnical University, Xi'an, 710004, Shaanxi Province, China.
Hong YanXi'an Fourth Hospital, Shaanxi Eye Hospital, Affiliated Xi'an Fourth Hospital, Northwestern Polytechnical University, Xi'an, 710004, Shaanxi Province, China. yhongb@fmmu.edu.cn.
Weijia YanDepartment of Ophthalmology, University of Heidelberg, 69120, Heidelberg, Germany.

Funding

National Major Science and Technology Projects of China 2017YFC1104500National Natural Science Foundation of China 81873674Xi'an Fourth Hospital Research Incubation Fund LH-6
6 · The paper itself

Abstract

backgroundTo compare the efficiency of preloaded vs manually loaded IOL (P-IOL vs M-IOL, respectively) delivery systems in cataract surgery in the largest ambulatory surgery center of Northwestern China.

methodsA total of 200 cases were included in this prospective, observational study. Time and motion data were collected in a one- or two-operating room (1-OR or 2-OR, respectively) scenario. A model of the efficiency and revenue implications of introducing a preloaded delivery system for IOLs in cataract surgery was used to estimate the changes in cataract throughput and hospital revenue through transitioning from the M-IOL delivery system to the P-IOL system.

resultsIn the 1-OR scenario, the mean total case time was 16.9 min using P-IOL, which was a 7.7% reduction compared with M-IOL (P < 0.01). In the 2-OR scenario, the mean total surgeon time was 10.8 min using P-IOL, which was a 7.8% reduction compared with M-IOL (P < 0.05). By switching from M-IOL to P-IOL, annual throughput will increase by 5.2% (960 cases) in the 1-OR scenario and 7.7% (1440 cases) in the 2-OR scenario, accompany by an increase in revenue of approx. 284,352 USD in the 1-OR scenario and approx. 426,528 USD in the 2-OR scenario.

conclusionThis report is the first of a comparison of two IOL delivery systems in China using different settings in the scenario. IOL delivery with preloaded systems is time saving in both the 1-OR scenario and the 2-OR scenario. Moreover, switching from the M-IOL delivery system to the P-IOL system holds potential to increase cataract throughput and hospital revenue.

Indexed as

CataractCataract ExtractionLenses, IntraocularAmbulatory Surgical ProceduresChinaHumansLens Implantation, IntraocularPostoperative ComplicationsProspective StudiesCataractCataract throughputHospital revenuePreloaded intraocular lens

Identifiers

PMID33261575
PMCPMC7708187

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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.