title: [Risk factors of retinal redetachment after expected silicone oil removal].
abstract: OBJECTIVE
  To analyze the clinical risk factors of the occurrence of retinal redetachment after expected silicone oil removal.
  
  
  METHODS
  Clinical data were studied retrospectively. A total of 105 eyes of 104 consecutive patients were enrolled according to the criteria as follows: the expected intraocular silicone oil removal was performed after pars plana vitrectomy for complicated rhegmatogenous retinal detachment (RRD); the retina was flat during silicone oil tampanade; the patients were dealt with by the same surgeon.
  
  
  RESULTS
  With a mean postoperative follow-up of 310 days, 11 of 105 eyes (10.4%) developed retinal redetachment after silicone oil removal. The redetachment rate was higher in the aphakic eyes (21.1%) than in the phakic/pseudophakic eyes (4.5%) (OR 5.69, P < 0.05). However, the factors, including giant tear, PVR grade C3 and D, previous failed retinal detachment surgery, high myopia, had no significance with retinal redetachment (Ps > 0.05). Among the 77 eyes undergoing prophylactic 360 degree laser retinopexy before silicone oil removal, 4 eyes had retinal redetachment (5.2%). The redetachment ratio was lower than those without prophylactic laser retinopexy (OR 0.16, P < 0.05).
  
  
  CONCLUSIONS
  Aphakia is a risk factor of retinal detachment after removal of silicone oil. Prophylactic 360 degree laser retinopexy can reduce the incidence of retinal redetachment.
authors.affiliation: Department of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha 410011, China.
authors.forename: Huiling
authors.initials: H
authors.lastname: Li
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Zhu
authors.forename: Deyong
authors.initials: D
authors.lastname: Jiang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001035:Aphakia / Q000150:complications*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D017075:Laser Coagulation; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D012160:Retina / Q000601:surgery; D012163:Retinal Detachment / Q000209:etiology* / Q000517:prevention & control; D012189:Retrospective Studies; D012307:Risk Factors; D012827:Silicone Oils / Q000627:therapeutic use*
chemical_list: D012827:Silicone Oils