Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Intravitreal Ranibizumab or Triamcinolone Acetonide as Adjunctive Treatment to Panretinal Photocoagulation for Proliferative Diabetic Retinopathy
Brief Summary: The purpose of the study is to find out if treatment with an intravitreal injection of triamcinolone or an intravitreal injection of ranibizumab can prevent loss of vision caused by panretinal photocoagulation treatment. At the present time, it is not known whether intravitreal steroid or anti-vascular endothelial growth factor (anti-VEGF) injections are beneficial in preventing vision loss after panretinal photocoagulation (PRP) treatment. It is possible that one or both of the types of injections will prevent vision loss after PRP treatment. However, it is not known whether the benefits of the injections will outweigh the risks. It is possible that because of side effects, the injections may not be as good as laser alone in treating the diabetic retinopathy.


Options:
A: Arm Label: Sham injection plus laser; Type: EXPERIMENTAL; Interventions: Behavioral: Sham injection, Procedure: Focal/grid laser | Arm Label: 0.5mg Ranibizumab plus laser; Type: EXPERIMENTAL; Interventions: Drug: Ranibizumab, Procedure: Focal/grid laser | Arm Label: 4-mg Triamcinolone Acetonide plus Laser; Type: ACTIVE_COMPARATOR; Interventions: Drug: Triamcinolone Acetonide, Procedure: Focal/grid laser | Intervention Type: DRUG; Name: Ranibizumab; Assigned to Arm(s): 0.5mg Ranibizumab plus laser | Intervention Type: DRUG; Name: Triamcinolone Acetonide; Assigned to Arm(s): 4-mg Triamcinolone Acetonide plus Laser | Intervention Type: BEHAVIORAL; Name: Sham injection; Assigned to Arm(s): Sham injection plus laser | Intervention Type: PROCEDURE; Name: Focal/grid laser; Assigned to Arm(s): 0.5mg Ranibizumab plus laser, 4-mg Triamcinolone Acetonide plus Laser, Sham injection plus laser
B: Arm Label: 1; Type: EXPERIMENTAL; Interventions: Drug: fluocinolone acetonide | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Drug: Fluocinolone Acetonide | Arm Label: 3; Type: SHAM_COMPARATOR; Interventions: Procedure: Standard of care laser photocoagulation | Intervention Type: DRUG; Name: fluocinolone acetonide; Assigned to Arm(s): 1 | Intervention Type: DRUG; Name: Fluocinolone Acetonide; Assigned to Arm(s): 2 | Intervention Type: PROCEDURE; Name: Standard of care laser photocoagulation; Assigned to Arm(s): 3
C: Arm Label: Dexamethasone 700 μg; Type: EXPERIMENTAL; Interventions: Drug: Dexamethasone | Arm Label: Dexamethasone 350 μg; Type: EXPERIMENTAL; Interventions: Drug: Dexamethasone | Arm Label: Sham; Type: SHAM_COMPARATOR; Interventions: Other: Sham | Intervention Type: DRUG; Name: Dexamethasone; Assigned to Arm(s): Dexamethasone 350 μg, Dexamethasone 700 μg | Intervention Type: OTHER; Name: Sham; Assigned to Arm(s): Sham
D: Arm Label: Dexamethasone 700 μg; Type: EXPERIMENTAL; Interventions: Drug: Dexamethasone | Arm Label: Dexamethasone 350 μg; Type: EXPERIMENTAL; Interventions: Drug: Dexamethasone | Arm Label: Sham; Type: SHAM_COMPARATOR; Interventions: Other: Sham | Intervention Type: DRUG; Name: Dexamethasone; Assigned to Arm(s): Dexamethasone 350 μg, Dexamethasone 700 μg | Intervention Type: OTHER; Name: Sham; Assigned to Arm(s): Sham

Answer: A