Evidence map›Paper›PMID 35382779›Full record

ArticleBMC ophthalmology2022

Vector analysis of high astigmatism (≥ 2.0 diopters) correction after small-incision lenticule extraction with stringent head positioning and femtosecond laser-assisted laser in situ keratomileusis with compensation of cyclotorsion.

Jihong Zhou, Wei Gu, Yan Gao, Guoli He, Fengju Zhang

Registry-linked trialAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC ophthalmology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07446751 (Outcomes of SMILE PRO Surgery for the Correction of Myopia With High Astigmatism), which is not on this map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

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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.

NCT07446751 naactive not recruitingnot on this mapstarted 2024, after this paper: background citation

Outcomes of SMILE PRO Surgery for the Correction of Myopia With High Astigmatism

TypeinterventionalSponsorHanoi Medical UniversityRan2024 to 2026Enrolled113ConditionsHigh AstigmatismArmsSMILE PRO surgery
3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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.

Jihong ZhouBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaomin Xiang, Dongcheng District, 100730, Beijing, China.
Wei GuBeijing Aier-Intech Eye Hospital, Beijing, China.
Yan GaoBeijing Aier-Intech Eye Hospital, Beijing, China.
Guoli HeBeijing Aier-Intech Eye Hospital, Beijing, China.
Fengju ZhangBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaomin Xiang, Dongcheng District, 100730, Beijing, China. zhangfj126@126.com.

Funding

Research and transformation application of capital clinical diagnosis and treatment technology by Beijing Municipal Commission of Science and Technology Z201100005520043
6 · The paper itself

Abstract

backgroundThe purpose of this study was to compare the astigmatic correction by vector analysis in patients with high myopic astigmatism after femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) with cyclotorsion compensation or small-incision lenticule extraction (SMILE) with stringent head positioning.

settingBeijing Aier-Intech Eye Hospital, Beijing, China.

designA retrospective case series.

methodsPatients who had correction of myopic astigmatism of 2 diopters (D) or more treated with either FS-LASIK with cyclotorsion compensation or SMILE with stringent head positioning were included. The results of vision and refraction were analyzed and compared between groups with the right eye.

resultsThe study enrolled 94 patients (41eyes in an FS-LASIK with compensation of cyclotorsion group and 53 eyes in a SMILE with stringent head positioning control group. The mean preoperative manifest cylinder was -2.65 ± 0.77D in the FS-LASIK group and 2.51 ± 0.56D in the SMILE group (P = 0.302). At 12 months, there was no significant between-group difference in uncorrected distance visual acuity (UDVA, P = 0.274) and postoperative spherical equivalent (SEQ) (P = 0.107). 46.3% and 24.5% of eyes in the FS-LASIK and SMILE groups were within 0.25 D were within 0.25D postoperative cylinder, respectively, and 78% and 66% of eyes in these two groups were within 0.5 D postoperative cylinder (P = 0.027, P = 0.202). The vector analysis showed comparable between-group target-induced astigmatism (TIA) (P = 0.114), surgically induced astigmatism (SIA) (P = 0.057), difference vector (DV, P = 0.069), and the angle of error (AE) (P = 0 .213) values. The index of success (IOS) was 0.18 in the FS-LASIK group and 0.24 in the SMILE group (P = 0.024), with a significant difference between the two groups.

conclusionFS-LASIK with compensation of cyclotorsion showed a favorable correction of high myopic astigmatism (≥ 2.0 D) compared to SMILE with stringent head positioning at 12 months.

Indexed as

AstigmatismKeratomileusis, Laser In SituCorneal StromaHumansLasers, ExcimerRefraction, OcularRetrospective StudiesAstigmatismCompensation of cyclotorsionFemtosecond laser-assisted laser in situ keratomileusisSmall-incision lenticule extractionStringent head positioning

Identifiers

PMID35382779
PMCPMC8985270

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Registered trials

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.