title: Equivalent tamponade by room air as compared with SF(6) after macular hole surgery.
abstract: BACKGROUND
  To evaluate the effect of tamponade by room air after vitrectomy for the treatment of idiopathic macular hole (MH).
  
  
  METHODS
  There were 156 eyes of 151 patients studied. The patients' ages ranged from 35 to 88 years old (mean: 65.1 years). After conventional pars plana vitrectomy with internal limiting membrane peeling, fluid air exchange was performed using 20% SF(6) (Gas group: 91 eyes) or room air (Air group: 65 eyes). Surgical outcomes were retrospectively analyzed.
  
  
  RESULTS
  Mean preoperative hole diameter was 352 microm in the Gas group and 370 microm in the Air group (P = 0.558). The closure rate of all cases was 91.0% after first surgery and 98.7% at last follow-up. The primary closure rate was 90.1% in the Gas group after 7.44 +/- 1.66 (mean +/- SD) days prone positioning period, and 92.3% in the Air group after 3.83 +/- 0.97 days of prone positioning. There was significant difference in prone positioning period (P < 0.0001), but not in the first closure rate (P = 0.132).
  
  
  CONCLUSIONS
  This study suggests that room air may have an equivalent tamponade effect, in spite of the shorter prone positioning period, than SF(6) after MH surgery.
authors: Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan.
authors: Yuhei
authors: Y
authors: Hasegawa
authors: Yasuaki
authors: Y
authors: Hata
authors: Yasutaka
authors: Y
authors: Mochizuki
authors: Ryoichi
authors: R
authors: Arita
authors: Shuhei
authors: S
authors: Kawahara
authors: Takeshi
authors: T
authors: Kita
authors: Yoshihiro
authors: Y
authors: Noda
authors: Tatsuro
authors: T
authors: Ishibashi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000388:Air; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016684:Prone Position; D012167:Retinal Perforations / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D013459:Sulfur Hexafluoride / Q000008:administration & dosage*; D014792:Visual Acuity / Q000502:physiology; D014821:Vitrectomy / Q000379:methods*
chemical_list: D013459:Sulfur Hexafluoride