Comparison of Changes of Inflammatory Proteins in Aqueous Humour of Subjects Treated With Avastin vs Lucentis

"Study participants will be divided into two arms. Subjects will receive Avastin or Lucentis a few days before vitrectomy surgery. The assignment will be double-masked.The first sample of aqueous humor will be obtained immediately prior to the intravitreal injection.~On the same of the intravitreal injection, a blood sample will be taken for hemoglobin A1C measurement. Approximately 1 week later when patients are having their scheduled vitrectomy surgery, an additional sample of aqueous humour will be obtained .~Intraocular cytokines levels will be measured in aqueous humor samples using multiplex cytokine assays."