Retinal reattachment — an attempt to treat stage 5 disease, has a low success rate.
[pedclerk.bsd.uchicago.edu]
For vitrectomy in proliferative diabetic retinopathy, 20-gauge systems have become the long-time standard and are still recommended.
[clinicalgate.com]
Pasquale LR, Thieme H, Iwamoto MA, Park JE, Nguyen HV, Aiello LM, Ferrara N, King GL (1994) Vascular endothelial growth factor in ocular fluid of patients with diabetic retinopathy
[books.google.com]