From: Analysis of risk factors for vitreous hemorrhage and recurrent hemorrhage after vitrectomy in patients with diabetic retinopathy
Parameters
Operation time (min)
 Mean (SD)
106.7 (22.0)
 Range
61.0–155.0
Combined cataract surgery (yes/no)
314/262
Stages of diabetes retinopathy (IV/V/VI)
150/287/139
Silicone oil filling
387
Gas filling
138
Fluid filling
46