SURGICAL OUTCOMES OF PARS PLANA VITRECTOMY FOR INTRAOCULAR COMPLICATIONS RELATED TO VASOPROLIFERATIVE TUMOR OF THE RETINA

Purpose: To investigate the safety and efficacy of vitrectomy pars plana vitrectomy in managing intraocular complications relating to vasoproliferative tumors of the retina (VPL). Methods: Retrospective study. 17 patients with VPL who underwent vitrectomy at Sheffield Teaching Hospital NHS Trust from 2005 to 2020 were included. Patient demographics, clinical characteristics, intraoperative data, and surgical outcomes were collected and evaluated. Results: The mean age was 52 years. Indications for pars plana vitrectomy included epiretinal membrane (n = 7), vitreous hemorrhage (n = 5), retinal detachment (n = 3), diagnostic (n = 1), and others (n = 1). After pars plana vitrectomy, 14/17 (82.4%) have stabilized vision and 3/17 (17.6%) deteriorated. Subgroup analysis of epiretinal membrane peel had good outcomes with 6/7 (85.7%) noticing improvement or stabilization of symptoms and mean logarithm of minimal angle of resolution visual acuity improved from 0.719 [6/30] 0.267 [6/12] to 0.476 [6/19] +/- 0.271 [6/12]. Patients undergoing surgery for vitreous hemorrhage also had good outcomes with resolution (and no recurrence) of the hemorrhage in 3/5 (60%) and 5/5 (100%) with one or more surgeries, respectively. Outcomes for retinal detachment surgery were logarithm of minimal angle of resolution 2.126 [HM] +/- 0.301 [6/12] preoperatively and 1.185 [6/95] +/- 0.522 [6/19] postoperatively, with one recurrence of retinal detachment. In the epiretinal membrane group, three patients had adjunctive treatment for VPL intraoperatively and four patients had none, and no difference found between the two groups in outcome or complications. Tumor with thickness of >= 2 mm exhibited inferior visual outcomes compared with <2 mm (P < 0.05). Conclusion: This is one of the largest data sets in looking at outcomes of vitrectomy for complications of VPL. Pars plana vitrectomy is effective and safe in managing VPL-related intraocular complications with good outcomes and a low rate of complications, especially for patients with epiretinal membrane and vitreous hemorrhage.