Predictive Factors for Macular Sensitivity and Fixation Stability After Pars Plana Vitrectomy for Rhegmatogenous Retinal Detachment Repair with Primary Pars Plana Vitrectomy: A Microperimetry Study

Purpose: To identify predictive factors for macular sensitivity and fixation stability following rhegmatogenous retinal detachment (RRD) repair using MP-1 microperimeter. Methods: Retrospective study of 66 eyes from 66 patients who underwent successful primary pars plana vitrectomy and had postoperative microperimetry assessment. Results: Median postoperative macular sensitivity was 12.9 decibels and median fixation stability was 81.5%. Median time between RRD repair and microperimetry testing was 10.0 months. Initial visual acuity ≥20/200 was associated with higher postoperative macular sensitivity (p=0.021) and fixation stability (p=0.004). Attached macula at presentation was associated with better macular sensitivity (p=0.041) and fixation stability (p=0.034). Gas tamponade resulted in superior outcomes compared to silicone oil for both macular sensitivity (p=0.004) and fixation stability (p