title: [Clinical features of silicone oil dependent eyes].
abstract: OBJECTIVE
  To study the clinical features of silicone oil dependent eyes.
  
  
  METHODS
  Retrospective observational case series. Twenty four silicone oil dependent eyes collected from the Peking Union Medical College from Jan.2000 to Dec.2006 were studied. The pathogeny, surgical process and prognosis were analyzed.
  
  
  RESULTS
  There were 5.9% silicone oil dependent eyes in eyes underwent vitrectomy and silicone oil tamponade. Silicone oil tamponade was performed again in 17 eyes because of severe proliferative vitreoretinopathy (PVR) or repeated vitreous hemorrhage after silicone oil removal and C3F8 tamponade. Silicone oil replacement was performed in 3 eyes because of severe PVR. Continually low intraocular pressure occurred after silicone oil removal in 4 eyes with 360 degree peripheral retinotomy. Thirteen of 24 patients had visual acuities of finger counting to 0.1, 9 had hand movement, one had light perception and one had no light perception.
  
  
  CONCLUSIONS
  The incidence of silicone oil dependent eye is approximately 5.9%. This is often seen in the patients with severe or repeated PVR, or 360 degree peripheral retinotomy. The visual prognosis is poor in most cases.
authors.affiliation: Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China. d_fangtian@hotmail.com
authors.forename: Fang-tian
authors.initials: FT
authors.lastname: Dong
authors.forename: Rong-ping
authors.initials: RP
authors.lastname: Dai
authors.forename: Yan
authors.initials: Y
authors.lastname: Jia
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011379:Prognosis; D012189:Retrospective Studies; D012827:Silicone Oils / Q000009:adverse effects*; D016896:Treatment Outcome; D014821:Vitrectomy / Q000009:adverse effects; D018630:Vitreoretinopathy, Proliferative / Q000175:diagnosis* / Q000209:etiology*; D055815:Young Adult
chemical_list: D012827:Silicone Oils