Evidence map›Paper›PMID 35592861›Full record

ArticleFrontiers in medicine2022

Applying Information Gain to Explore Factors Affecting Small-Incision Lenticule Extraction: A Multicenter Retrospective Study.

Shuang Liang, Shufan Ji, Xiao Liu, Min Chen, Yulin Lei, Jie Hou, Mengdi Li, Haohan Zou, Yusu Peng, Zhixing Ma and 3 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Frontiers in medicine, 2022. 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

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

1 citing paper in PubMed.

  1. 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

13 authors.

Shuang LiangClinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.
Shufan JiSchool of Computer Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China.
Xiao LiuSchool of Computer Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China.
Min ChenQingdao Eye Hospital, Shandong First Medical University, Qingdao, China.
Yulin LeiJinan Mingshui Eye Hospital, Jinan, China.
Jie HouJinan Mingshui Eye Hospital, Jinan, China.
Mengdi LiClinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.
Haohan ZouClinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.
Yusu PengQingdao Eye Hospital, Shandong First Medical University, Qingdao, China.
Zhixing MaJinan Mingshui Eye Hospital, Jinan, China.
Yuanyuan LiuDepartment of Health Statistics, College of Public Health, Tianjin Medical University, Tianjin, China.
Vishal JhanjiDepartment of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Yan WangClinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: This retrospective study aimed to identify the key factors influencing postoperative refraction after small-incision lenticule extraction (SMILE) using information gain. Methods: This study comprised 2,350 eyes of 1,200 patients who underwent SMILE using a Visumax 500-kHz femtosecond laser (Carl Zeiss Meditec AG) in three ophthalmic centers: Tianjin Eye Hospital (center A), Jinan Mingshui Eye Hospital (center B), and Qingdao Eye Hospital (center C). Anterior segment features, including corneal curvature and central corneal thickness (CCT), were obtained from Pentacam HR (Oculus, Wetzlar, Germany). Information gain was calculated to analyze the importance of features affecting postoperative refraction. Results: Preoperative and postoperative mean spherical equivalent (SE) refraction were -5.00 (-6.13, -3.88) D and 0.00 (-0.25, 0.13) D, respectively. None of the patients lost more than two lines of corrected distance visual acuity. The safety index was 1.32 ± 0.24, 1.03 ± 0.08, and 1.13 ± 0.16 in centers A, B, and C, respectively. The efficacy index was 1.31 ± 0.25, 1.02 ± 0.08, and 1.13 ± 0.17 in centers A, B, and C, respectively. At least 95% of the eyes were within ±1.00 D of the attempted correction. Postoperative refraction was related to preoperative spherical diopter refraction (r = 0.369, Conclusions: SMILE was considered a safe and effective procedure for correcting myopia. Based on information gain, postoperative refraction was influenced by preoperative mean anterior corneal curvature, CCT, refraction, and residual stromal thickness.

Indexed as

contributing factorsinformation gainmulticentermyopiasmall-incision lenticule extraction

Identifiers

PMID35592861
PMCPMC9110865

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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.