title: Role of bevacizumab in the prevention of early postoperative haemorrhage after 25-gauge microincision vitrectomy surgery.
abstract: OBJECTIVE
  To evaluate the effect of preoperative intravitreal bevacizumab injection on the incidence of postoperative haemorrhage and visual prognosis, in patients undergoing 25-gauge micro incision vitrectomy surgery (MIVS) for diabetic vitreous haemorrhage.
  
  
  METHODS
  One hundred and twenty two eyes of 122 patients of diabetic retinopathy of both genders and aged over 18 years, who presented with non-resolving vitreous haemorrhage were enrolled for this study. All patients received an intravitreal injection of 1.25 mg/0.05 mL bevacizumab (Avastin) which was followed one week later by 25-gauge sutureless micro incision vitrectomy surgery. Main outcomes measured were best corrected visual acuity (BCVA) assessed with logMAR and post-operative vitreous haemorrhage. Follow ups were up to six months post-operatively. IBM SPSS 21 was used for data analysis.
  
  
  RESULTS
  A total of 122 patients were included; 78 (63.9%) males and 44 (36.1%) females. Mean age at the time of surgery was 51.4 ± 13.66 years. The mean preoperative BCVA was 1.64 ± 0.427 logMAR which improved to 0.57 ± 0.253 logMAR at 12 months post-operatively (p-value < 0.001). Recurrent vitreous haemorrhage was seen in four patients (3.28%). one1 week before 25-gauge vitrectomy helps to reduce the incidence of early post-vitrectomy haemorrhage in diabetic patients.
authors.affiliation: Dr. Zaheer Sultan, FCPS. LRBT Free Base Eye Hospital, Korangi 2 ½, Karachi, Pakistan.
authors.forename: Zaheer
authors.initials: Z
authors.lastname: Sultan
authors.affiliation: Dr. Syed Fawad Rizvi, FCPS. LRBT Free Base Eye Hospital, Korangi 2 ½, Karachi, Pakistan.
authors.forename: Syed Fawad
authors.initials: SF
authors.lastname: Rizvi
authors.affiliation: Dr. Faisal Murtaza Qureshi, FRCS. LRBT Free Base Eye Hospital, Korangi 2 ½, Karachi, Pakistan.
authors.forename: Faisal Murtaza
authors.initials: FM
authors.lastname: Qureshi
authors.affiliation: Dr. Syed Asaad Mahmood, MBBS. LRBT Free Base Eye Hospital, Korangi 2 ½, Karachi, Pakistan.
authors.forename: Syed Asaad
authors.initials: SA
authors.lastname: Mahmood
keywords: Bevacizumab; Diabetic retinopathy; Micro incision vitrectomy surgery; Prognosis; Vitreous haemorrhage