249
Participants
Start Date
May 5, 2024
Primary Completion Date
March 31, 2026
Study Completion Date
October 31, 2026
pars plana vitrectomy(PPV)
Vitrectomy was performed for severe non-proliferative diabetic retinopathy, but panretinal photocoagulation(PRP) was not performed
Pars plana vitrectomy(PPV) +Panretinal photocoagulation(PRP)
PPV was performed for severe non-proliferative diabetic retinopathy with PRP.
Panretinal photocoagulation(PRP)
Only PRP was used for severe non-proliferative diabetic retinopathy.
Tianjin medical university eye hospital, Tianjin
Fei Gao
OTHER