title: Vitreous hemorrhage in diabetic eyes previously treated with panretinal photocoagulation.
abstract: BACKGROUND
  Vitreous hemorrhage (VH) is a major cause of severe vision loss in diabetic patients. The aim of this study was to assess the incidence and risk factors for new VH in diabetics previously treated with panretinal photocoagulation (PRP) for proliferative retinopathy (PDR) in community base center.
  
  
  METHODS
  Records of 192 diabetics (35 type 1, 157 type 2), undergoing PRP for diabetic retinopathy were retrospectively reviewed. Eyes presenting initially with high-risk PDR received PRP without delay, and eyes presenting initially with severe non proliferative retinopathy (NPDR) or early PDR had undergone central retinal photocoagulation (CRP), and then, when high risk PDR developed, received PRP treatment.
  
  
  RESULTS
  VH had developed in 39% of the eyes despite PRP. Risk factors for VH in type 1 diabetes were: early onset and long duration of disease (23.8 versus 39.0 years of age, P=0.007, and 25.8 versus 16.0 years, P=0.002, respectively). In type 2, VH occurred with less follow-up and angiographic examinations (7.4% versus 3.8%, P=0.027, and 33% versus 47%, P=0.07, respectively). CRP decreased the risk for VH from 43 to 15%, P=0.013.
  
  
  CONCLUSIONS
  In type 2 diabetes, regular ophthalmic follow-up and intensive PRP may reduce the risk for VH in eyes previously treated by PRP. In type 1, early onset disease and long duration are associated with higher incidence of VH.
authors.affiliation: Department of Ophthalmology, Kaplan Medical Center, Rehovot 76100, Israel. guy.kleinmann@hsc.utah.edu
authors.forename: Guy
authors.initials: G
authors.lastname: Kleinmann
authors.forename: David
authors.initials: D
authors.lastname: Hauser
authors.forename: Edna
authors.initials: E
authors.lastname: Schechtman
authors.forename: Gennady
authors.initials: G
authors.lastname: Landa
authors.forename: Amir
authors.initials: A
authors.lastname: Bukelman
authors.forename: Ayala
authors.initials: A
authors.lastname: Pollack
mesh_terms: D000328:Adult; D017668:Age of Onset; D003922:Diabetes Mellitus, Type 1 / Q000150:complications; D003924:Diabetes Mellitus, Type 2 / Q000150:complications; D003930:Diabetic Retinopathy / Q000601:surgery*; D005260:Female; D006801:Humans; D015994:Incidence; D007557:Israel / Q000453:epidemiology; D017075:Laser Coagulation; D008297:Male; D012307:Risk Factors; D013997:Time Factors; D014792:Visual Acuity; D014823:Vitreous Hemorrhage / Q000453:epidemiology* / Q000209:etiology