title: Comparison of bevacizumab and ranibizumab in age-related macular degeneration: a systematic review and meta-analysis.
abstract: OBJECTIVE
  To compare the effectiveness and safety between bevacizumab and ranibizumab in the treatment of age-related macular degeneration (AMD) through a systematic review and meta-analysis.
  
  
  METHODS
  We performed a comprehensive search of randomized controlled trials (RCTs), non-RCTs, case-control and cohort studies that compared bevacizumab and ranibizumab using PubMed and the Cochrane Library. After the related data were extracted by two investigators independently, pooled weighted mean differences (WMDs) and risk ratios (RRs) with 95% confidence intervals (CIs) were estimated using a random-effects or a fixed-effects model.
  
  
  RESULTS
  A total of four RCTs involving 1927 patients and eleven retrospective case series involving 2296 patients were included. For the primary outcomes, no significant differences were found between ranibizumab group and bevacizumab group in visual acuity (WMD: -0.04; 95%CI: -0.08 to 0.00; P=0.06), best corrected visual acuity (WMD: -0.05; 95%CI: -0.10 to 0.00; P=0.05), retina thickness (WMD: -4.69; 95%CI: -13.15 to 3.76; P=0.86) and foveal thickness (WMD: 10.91; 95%CI: -14.73 to 36.56; P=0.40). The pooled analyses in the evaluation of safety showed that compared to bevacizumab, ranibizumab was associated with decreased risks of ocular inflammation (RR: 0.45; 95% CI: 0.23 to 0.89; P=0.02) and venous thrombotic events (RR: 0.27; 95%CI: 0.08 to 0.89; P=0.03). However, there were no significant differences observed in deaths (P=0.69) and arterial thromboembolic events (P=0.71) between the two groups.
  
  
  CONCLUSIONS
  With equal clinical efficacy, ranibizumab was found to be associated with less adverse events compared to bevacizumab, indicating that ranibizumab might be a safer management.
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Xiao-Yu
authors.initials: XY
authors.lastname: Zhang
authors.affiliation: Department of Cardiology, the First Hospital of China Medical University, Shenyang 110001, Liaoning Province, China.
authors.forename: Xiao-Fan
authors.initials: XF
authors.lastname: Guo
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Shao-Dan
authors.initials: SD
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Jing-Na
authors.initials: JN
authors.lastname: He
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Cao-Yu
authors.initials: CY
authors.lastname: Sun
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Zou
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Han-Si
authors.initials: HS
authors.lastname: Bi
authors.affiliation: Department of Ophthalmology, the Fourth People's Hospital of Shenyang, Shenyang 110031, Liaoning Province, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Qu
keywords: age-related macular degeneration; bevacizumab; ranibizumab