A Novel MATLAB‐Based Quantification of Microincision Cyclotorsion and Its Impact on Myopic Astigmatism Correction in KLEx.
Purpose: To develop an automated image recognition method for the identification of corneal microincisions in keratorefractive lenticule extraction (KLEx) and assess microincisional cyclotorsion and its impact on postoperative astigmatism correction using vector analysis. Methods: This retrospective...
| Publicado en: | Journal of Ophthalmology Vol. 2026; pp. 1 - 8 |
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| Autores principales: | , , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
9/20/2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=197215909&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 197215909 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 2090004X 9038 jtl: Journal of Ophthalmology issn: 2090004X maglogo: N pubinfo: dt: 9/20/2026 vid: 2026 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 197215909 197215909 197215909 10.1155/joph/7176960 197215909 ppf: 1 ppct: 7 formats: tig: atl: A Novel MATLAB‐Based Quantification of Microincision Cyclotorsion and Its Impact on Myopic Astigmatism Correction in KLEx. aug: au: Hou, Jie Rao, Feng Lei, Yulin Zhang, Jing Dong, Yahui Deepali, Deepali affil: Jinan Mingshui Eye Hospital,, Jinan 250200,, China sug: subj: Myopia Surgery Astigmatism Surgery Eye Surgery Methods Minimally Invasive Procedures Laser Therapy Automation Software Slit Lamp Examination Image Processing, Computer Assisted Eye Movement Measurements Postoperative Period Treatment Outcomes Human China Funding Source Retrospective Design Record Review Surgical Patients Descriptive Statistics ab: Purpose: To develop an automated image recognition method for the identification of corneal microincisions in keratorefractive lenticule extraction (KLEx) and assess microincisional cyclotorsion and its impact on postoperative astigmatism correction using vector analysis. Methods: This retrospective study included 92 patients (184 eyes) who underwent KLEx. Postoperative slit‐lamp images were analyzed using a custom MATLAB‐based program. The cyclotorsion angle and direction of the microincisions were quantified. Vector analysis was used to evaluate postoperative astigmatism correction at one week, one month, and three months. Correlations between cyclotorsion magnitude and preoperative ocular parameters were analyzed, and astigmatic outcomes were compared between low (≤ 4°) and high (> 4°) cyclotorsion groups. Results: The mean absolute microincision cyclotorsion angle was 4.19° ± 2.92° (range: 0°–12.43°) in right eyes and 4.53° ± 3.36° (range: 0°–13.74°) in left eyes, with no significant interocular difference (p > 0.05). Outward incision cyclotorsion was observed in > 80% of eyes. No significant correlations were found between the cyclotorsion magnitude and preoperative parameters, including age, spherical equivalent, central corneal thickness, keratometry, or Q value (all p > 0.05). At 3 months, there were no significant differences in vector parameters between low and high cyclotorsion groups, though the correction index tended to be slightly lower in the high‐cyclotorsion group (0.93° ± 0.32° vs. 1.04° ± 0.40°, p > 0.05). Conclusion: An automated MATLAB‐based method can be used to quantify the cyclotorsional movement of microincisions in KLEx. The magnitude of corneal microincisional cyclotorsion does not appear to have a significant effect on the efficacy of corneal astigmatism correction. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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