title: Factors affecting imaging of spectral-domain optical coherence tomography in gas-filled eyes after macular-hole surgery.
abstract: OBJECTIVE
  We investigated factors affecting imaging of spectral-domain optical coherence tomography (SD-OCT) in gas-filled eyes after macular-hole (MH) surgery.
  
  
  METHODS
  The study comprised 25 eyes in 23 patients, eight men and 15 women, with a mean age of 66.9 (48-77) years, all of whom had undergone vitrectomy for MH. Sulfur hexafluoride (SF(6)) gas was used as a tamponade, and the patients were maintained in a prone position after surgery. The SD-OCT imaging was performed on postoperative days 1 and 2.
  
  
  RESULTS
  The success rate of imaging was 88.0% (22/25 eyes) on postoperative day 1 and 95.8% (23/24 eyes) on postoperative day 2. The rate of MH closure in successful imaging cases was 81.8% (18 eyes) on postoperative day 1 and 95.7% (22 eyes) on postoperative day 2. The imaging accuracy in gas-filled eyes increased by setting the focus value of the OCT to a myopic refractive shift.
  
  
  CONCLUSIONS
  The imaging of many gas-filled eyes following MH surgery is possible, even at the early postoperative stage, by setting the focus value of the OCT to a myopic refractive shift.
authors.affiliation: Department of Ophthalmology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan. ort@med.kawasaki-m.ac.jp
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Goto
authors.forename: Kenichi
authors.initials: K
authors.lastname: Mizukawa
authors.forename: Junichi
authors.initials: J
authors.lastname: Kiryu
mesh_terms: D000368:Aged; D058450:Endotamponade; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016684:Prone Position; D012167:Retinal Perforations / Q000175:diagnosis* / Q000188:drug therapy / Q000601:surgery*; D013459:Sulfur Hexafluoride / Q000008:administration & dosage*; D041623:Tomography, Optical Coherence; D014821:Vitrectomy
chemical_list: D013459:Sulfur Hexafluoride