25G/27G Pars Plana Vitrectomy (PPV)

25G/27G vitrectomy is often considered when vitreous hemorrhage that is difficult to absorb on its own, tractional retinal detachment threatens the macula, dense posterior membranes affect visual function, or recurrent bleeding hinders laser treatment. The decision depends on the extent of the lesion and macular involvement, previous PRP/anti-VEGF response, ability to cooperate with postoperative positioning, systemic disease control, and anesthesia evaluation.