title: Chung's swing technique: a new technique for small-incision lenticule extraction.
abstract: BACKGROUND
  To introduce the Chung's swing technique for small-incision lenticule extraction (SMILE).
  
  
  METHODS
  A total of 112 eyes of 56 patients were included in this study. Patients were divided into two groups: 52 eyes of 26 patients were treated with SMILE using a traditional method (traditional group) and 60 eyes of 30 patients were treated with SMILE using the Chung's swing technique (swing group).
  
  
  RESULTS
  At 1 month postoperatively, all eyes in both groups had an uncorrected distance visual acuity of 20/20 or better. The efficacy indices were 1.09 ± 0.17 and 1.02 ± 0.11 (p = 0.492), and the safety indices were 1.12 ± 0.14 and 1.09 ± 0.15 (p = 0.537), for the traditional and swing group, respectively. All eyes in both groups underwent successful lenticule extraction; all lenticules were intact and complete. The mean lenticule extraction times were 48.67 ± 4.9 and 39.8 ± 5.53 s, for the traditional and swing group, respectively (p < 0.001).
  
  
  CONCLUSIONS
  The Chung's swing technique is efficient for lenticule separation and extraction. Our study results showed good clinical outcomes.
  
  
  BACKGROUND
  
  
  
  BACKGROUND
  KCT0001978 . Registered 22 July 2016. Retrospectively registered.
authors: Onnuri Smile Eye Clinic, Hyobong building 9F 1, Gangnam-daero 65 gil, Seocho-gu, Seoul, Korea.
authors: Bu Ki
authors: BK
authors: Kim
authors: Onnuri Smile Eye Clinic, Hyobong building 9F 1, Gangnam-daero 65 gil, Seocho-gu, Seoul, Korea.
authors: Su Joung
authors: SJ
authors: Mun
authors: Onnuri Smile Eye Clinic, Hyobong building 9F 1, Gangnam-daero 65 gil, Seocho-gu, Seoul, Korea.
authors: Dae Gyu
authors: DG
authors: Lee
authors: Onnuri Smile Eye Clinic, Hyobong building 9F 1, Gangnam-daero 65 gil, Seocho-gu, Seoul, Korea.
authors: Hyun Tae
authors: HT
authors: Choi
authors: Onnuri Smile Eye Clinic, Hyobong building 9F 1, Gangnam-daero 65 gil, Seocho-gu, Seoul, Korea. ytchungc@hanmail.net.
authors: Young Taek
authors: http://orcid.org/0000-0002-8203-8445
authors: YT
authors: Chung
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000601:surgery; D003319:Corneal Stroma / Q000601:surgery*; D048988:Corneal Surgery, Laser / Q000379:methods*; D005260:Female; D006801:Humans; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D009216:Myopia / Q000601:surgery*; D012029:Refraction, Ocular; D012189:Retrospective Studies; D014792:Visual Acuity; D055815:Young Adult
keywords: Chung’s swing technique; SMILE; Small incision lenticule extraction; Swing technique