Microperimetry-Assessed Functional Alterations and OCT-Changes in Patients after Retinal Detachment Surgery Using Pars Plana Vitrectomy and SF6 Tamponade

Abstract

Background: We study the retinal function measured by macular integrity assessment microperimetry (MAIA) and structural changes assessed by scanning swept source optical coherence tomography (SS-OCT) between healthy individuals and patients undergoing pars plana vitrectomy (PPV) after rhegmatogenous retinal detachment (RRD). Methods: Cross-sectional study. Early Treatment Diabetic Retinopathy Study (ETDRS) grids were measured by SS-OCT and compared with the MAIA parameters. Results: Thirty-eight eyes with RRD (19 macula-on and 19 macula-off) were compared with 113 healthy eyes. The retinal sensitivity and average total threshold were reduced in all sectors in the RRD group; macular integrity index was increased. Macular thicknesses in total retina and ganglion cell layer (GCL)++ protocols were higher in the RRD group in nasal outer (NO) and central (C) sectors and only in C sector for GCL+ protocol. Thicknesses were lower in total retina, GCL++ protocols in the temporal outer (TO) sector and in the GCL+ protocol in NO sector. Best-corrected visual acuity (BCVA) correlated moderately with retinal sensitivity in all sectors and in just several sectors with time between the date of surgery and the test. The central nasal (CN) sector thickness and the average total threshold were higher in the macula-on subgroup. Conclusions: RRD and subsequent surgery results in functional and structural changes, especially in individuals with macular detachment.

Retinal damage extends beyond the border of the detached retina in fovea‐on retinal detachment

“…Fortunately, it seems that the retinal damage can recover postoperatively and the recovery is better if the retina was not detached preoperatively. However, the improvement of retinal sensitivity values can also be caused by the removal of media opacification due to vitrectomy or learning effects (Díaz-Barreda et al, 2021). The presence of gas tamponade or gas cataract can also negatively influence the retinal sensitivity measurement.…”

Long‐term follow up of macular perfusion evaluated by optical coherence tomography angiography after rhegmatogenous retinal detachment surgery

“…Visual recovery after RRD surgery is not always complete, and although there are factors related to visual recovery, there are still unknown factors that can modify functional improvement [19]. In our study, we checked microvascular modifications in 60 eyes after successful RRD surgery, focusing on the previous status of the macula.…”