scholarly journals Electroretinographic recordings with skin electrodes to assess effects of vitrectomy with gas tamponade on eyes with rhegmatogenous retinal detachment

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Masayuki Shibuya ◽  
Yuji Yoshikawa ◽  
Takeshi Katsumoto ◽  
Takuhei Shoji ◽  
Hiromi Kondo ◽  
...  
Keyword(s):  
Retinal Detachment ◽  
Pars Plana Vitrectomy ◽  
Rhegmatogenous Retinal Detachment ◽  
Rank Correlation ◽  
Vitreous Cavity ◽  
Gas Tamponade ◽  
Spearman’S Rank Correlation ◽  
Skin Electrodes ◽  
Spearman’S Rank Correlation Coefficient ◽  
Pars Plana

AbstractThe purpose of this study was to evaluate the retinal function by electroretinograms (ERGs) recorded with the RETeval system using skin electrodes after pars plana vitrectomy (PPV) with gas tamponade in eyes with a rhegmatogeneous retinal detachment (RRD). Flicker ERGs were recorded from 17 eyes with an RRD before (baseline), within 2 weeks after the PPV when the size of the tamponade gas was approximately one-half of the vitreous cavity (P1), and when the gas had been completely absorbed (P2). The amplitudes of the flicker ERGs at each phase were compared to that at the baseline. The median (25th, 75th percentile) of the amplitude was 10.0 µV (5.5, 13.0 µV) at the baseline, 11.7 µV at P1 (7.8, 14.8 µV; P = 0.003), and 17.1 µV at P2 (11.7 23.3 μV; P < 0.001). The ratio of the amplitudes in the affected eye to that in the fellow eye at the baseline and at each phase was calculated, and the ratio of the amplitudes at P1 and P2 were significantly and positively correlated (P = 0.723, P = 0.001; Spearman’s rank correlation coefficient). We conclude that recordings the flicker ERGs with skin electrodes can be used to assess the physiology of eyes even with the vitreous cavity half-filled with the gas used to tamponade the retina.

scholarly journals Different tamponade effects of intraocular silicone oil and sterilized air after single pars plana vitrectomy for rhegmatogenous retinal detachment

2020 ◽  
Author(s):  
Yifan Zhou ◽  
Siqi Zhang ◽  
Min Gao ◽  
Hao Zhou ◽  
Haiyun Liu ◽  
...  
Keyword(s):  
Retinal Detachment ◽  
Pars Plana Vitrectomy ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Retinal Vasculature ◽  
Retinal Layer ◽  
Thickness Change ◽  
Gas Tamponade ◽  
Retinal Layers ◽  
Pars Plana

Abstract Purpose: To investigate different fundus vasculature and structure changes after single pars plana vitrectomy (PPV) following silicone oil (SO) or sterilized air in macular-off rhegmatogenous retinal detachment (RRD) patients. Method: 39 eyes (39 patients) with macular-off RRD underwent standard three-port 23-gauge PPV and intraocular SO or gas tamponade. Optical Coherence Tomography (OCT) and angiography were used to evaluate fundus structure and vasculature including retinal layers thicknesses and vessel density (VD) changes throughout observation for 12 weeks. Retinal layers were segmented into: NFL, GCL+IPL, INL, OPL, ONL+IS, OS+RPE and BRM. Fundus vasculature was segmented into superficial and deep capillary plexus (SCP, DCP), and choriocapillaris plexus (CCP). Result: For fundus vasculature, SO tamponade led to significant decrease in both SCPVD and DCPVD, while only SCPVD was found significantly decreased in gas tamponade eyes. For specific retinal layer, SO led to significant decrease in NFL and INL thicknesses. OPL, ONL+IS and OS+RPE thicknesses had significant increase in both SO tamponade and gas tamponade eyes. Conclusion: Different intraocular tamponades could have various impacts on retinal vasculature and structure. Compared to sterilized air, silicone oil tamponade could have relatively more negative effects on retinal vasculature and specific retinal layer thickness change.

scholarly journals Primary rhegmatogenous retinal detachment: evaluation of a minimally restricted face-down positioning after pars plana vitrectomy and gas tamponade

2021 ◽  
Vol 14 (6) ◽  
pp. 936-939
Author(s):  
Kiichiro Kusaba ◽  
◽  
Tsuneaki Handa ◽  
Yukihiko Shiraki ◽  
Takuya Kataoka ◽  
...  
Keyword(s):  
Postoperative Complications ◽  
Retinal Detachment ◽  
Success Rate ◽  
Pars Plana Vitrectomy ◽  
Rhegmatogenous Retinal Detachment ◽  
Gas Tamponade ◽  
Retinal Tears ◽  
Pars Plana ◽  
Anatomical Success ◽  
Anatomical Success Rate

AIM: To evaluate the safety and efficacy of a minimally restricted face-down postoperative positioning following pars plana vitrectomy (PPV) with gas tamponade for primary rhegmatogenous retinal detachment (RRD). METHODS: Patients with primary RRD treated with PPV and gas tamponade and followed up for at least 6mo were selected for the study. All phakic eyes underwent simultaneous cataract surgery. The patients were required to be in a postoperative position that prevented downward flow of retinal tears. Patients with macular detachment were positioned face-down for only a couple of hours. The patients were assessed for preoperative and postoperative best-corrected visual acuity (BCVA), anatomical retinal reattachment rate, and postoperative complications. RESULTS: In total, 40 eyes of 39 patients with primary RRD were included in the study. A single tear was present in 30 eyes (75.0%), multiple retinal tears were present in nine eyes (22.5%), and oral dialysis was present in one eye (2.5%). The anatomical success rate was 90.0% (36 cases) after the primary surgery, and the final anatomical success rate was 100%. The BCVA improved significantly (P<0.001) from 0.75 logarithm angle of resolution (logMAR) preoperatively to 0.12 logMAR at the final visit. Postoperative complications included intraocular pressure elevation (≥25 mm Hg) in 11 patients (27.5%), fibrin formation in two patients (5.0%), pupillary capture of the intraocular lens in two patients (5.0%), and posterior synechia in one patient (2.5%). CONCLUSION: A minimally restricted face-down and flexible postoperative positioning after PPV and gas tamponade for primary RRD is effective and safe.

scholarly journals The comparison of the surgical outcome of 27-gauge pars plana vitrectomy for primary rhegmatogenous retinal detachment between air and SF6 gas tamponade

Eye ◽  
2019 ◽  
Vol 34 (2) ◽  
pp. 299-306 ◽  
Author(s):  
Akira Tetsumoto ◽  
Hisanori Imai ◽  
Mayuka Hayashida ◽  
Keiko Otsuka ◽  
Wataru Matsumiya ◽  
...  
Keyword(s):  
Retinal Detachment ◽  
Surgical Outcome ◽  
Pars Plana Vitrectomy ◽  
Rhegmatogenous Retinal Detachment ◽  
Gas Tamponade ◽  
Pars Plana
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