title: Occurrence of posterior vitreous detachment after femtosecond laser in situ keratomileusis: Ultrasound evaluation.
abstract: OBJECTIVE
  To analyze the modifications to the vitreous body after femtosecond laser-assisted laser in situ keratomileusis (LASIK) for myopia.
  
  
  METHODS
  Centre Hospitalier National Des Quinze-Vingts, Paris, France.
  
  
  METHODS
  Case series.
  
  
  METHODS
  B-scan ultrasonography of the posterior ocular segment was performed the day before and 48 hours after femtosecond LASIK for myopia. Posterior vitreous detachment (PVD) was diagnosed by the presence of a low-reflected mobile echogenic membrane partially or completely detached from the retina. Eyes with signs of partial or total PVD on preoperative examination were excluded. Occurrence of total or partial PVD after surgery was the main outcome measure.
  
  
  RESULTS
  Thirty-one eyes of 18 patients (10 women; mean age 28 years ± 5 [SD]) were included in the study. The mean preoperative spherical equivalent was -4.38 diopters (D) (range -2.88 to -6.75 D). After surgery, 5 eyes (16%) developed partial or total PVD. The remaining 26 eyes had no signs of PVD postoperatively.
  
  
  CONCLUSIONS
  Although less vacuum is required to create a corneal flap with a femtosecond laser than with a conventional microkeratome, the incidence of PVD after femtosecond laser-assisted LASIK was similar to that reported for microkeratome-assisted LASIK.
authors.affiliation: Department of Ophthalmology, Centre Hospitalier National d'Ophtalmologie Des Quinze-Vingts, Paris, France. jcgavrilov@quinze-vingts.fr
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Gavrilov
authors.forename: Thomas
authors.initials: T
authors.lastname: Gaujoux
authors.forename: Mickael
authors.initials: M
authors.lastname: Sellam
authors.forename: Laurent
authors.initials: L
authors.lastname: Laroche
authors.forename: Vincent
authors.initials: V
authors.lastname: Borderie
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000009:adverse effects*; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008297:Male; D009216:Myopia / Q000601:surgery*; D057972:Posterior Eye Segment / Q000000981:diagnostic imaging / Q000473:pathology*; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology; D014463:Ultrasonography; D014792:Visual Acuity / Q000502:physiology; D020255:Vitreous Detachment / Q000000981:diagnostic imaging / Q000209:etiology*; D055815:Young Adult