Introduction
PDR, TRD, Diabetic retinopathy, blindness, tractional retinal detachment, postoperative vision, vitreous hemorrhage
TRACTIONAL RETINAL DETACHMENT, DIABETIC RETINOPATHY, BLINDNESS, VITREOUS HEMORRHAGE, COMPLICATIONS
Diabetic retinopathy (DR) has become the leading cause of blindness among working-age adults (20–79 years old) (The development of microincision vitrectomy surgery has greatly improved the precision, safety, and efficiency of intraocular surgery in recent years. Pars plana vitrectomy (PPV) has been widely used in the treatment of PDR complications, including un-clearing vitreous hemorrhage (VH) (1–6 months) and tractional retinal detachment (TRD) involving or threatening the macula (Before surgery, a better understanding of prognostic factors related to long-term vision after vitrectomy can help clinicians make better surgical decisions, assist patients with PDR in adjusting their psychological expectations, and foster better patient-doctor communication. Previous studies have explored several factors related to postoperative vision; however, the independent variables differ among them (