title: [Responsibility of incomplete retinal photocoagulation in the indication of vitrectomy in proliferative diabetic retinopathy].
abstract: OBJECTIVE
  We report an epidemiologic study about prophylactic photocoagulation of ischaemic diabetic retinopathy in order to avoid proliferative stage and severe vitreous haemorraghe.
  
  
  METHODS
  We studied retrospectively 42 eyes of 32 diabetic patients who underwent a vitrectomy in 1993. For each patient several items were analyzed: nationality, sex, age, type, duration and clinical course of diabetes, and other risk factors. Slit lamp and ocular fundus examination were noted; in particular lens, iris and vitreoretinal framework.
  
  
  RESULTS
  Almost all patients had an inadequate laser photocoagulation: in 26 eyes (62%) it was insufficient or non-existent, uncomplete in 12 eyes (29%), and non confluent for 18 eyes (43%). Only four eyes have had complete and confluent panphotocoagulation.
  
  
  CONCLUSIONS
  Photocoagulation appears to be the priority therapy to avoid most severe complications of proliferative diabetic retinopathy. Laser photocoagulation must be started from preproliferative retinopathy, confluent on the useless ischaemic retinal areas, and dense elsewhere.
authors.affiliation: Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris.
authors.forename: J
authors.initials: J
authors.lastname: Haut
authors.forename: C
authors.initials: C
authors.lastname: Romeo
authors.forename: N
authors.initials: N
authors.lastname: Lepvrier-Guibal
authors.forename: C
authors.initials: C
authors.lastname: Monin
authors.forename: C
authors.initials: C
authors.lastname: Morel
mesh_terms: D000328:Adult; D000368:Aged; D003930:Diabetic Retinopathy / Q000453:epidemiology / Q000601:surgery*; D005260:Female; D006801:Humans; D053685:Laser Therapy / Q000009:adverse effects / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012086:Reoperation; D015861:Retinal Neovascularization / Q000209:etiology; D012189:Retrospective Studies; D012307:Risk Factors; D017211:Treatment Failure; D014821:Vitrectomy
vernacular_title: Responsabilité des photocoagulations rétiniennes insuffisantes dans l'indication des vitrectomies pour rétinopathie diabétique proliférative.