scholarly journals Quantification of the peripheral vitreous after vitreous shaving using intraoperative optical coherence tomography

2021 ◽  
Vol 6 (1) ◽  
pp. e000605 ◽  
Author(s):  
Koichi Nishitsuka ◽  
Katsuhiro Nishi ◽  
Hiroyuki Namba ◽  
Yutaka Kaneko ◽  
Hidetoshi Yamashita
Keyword(s):  
Optical Coherence Tomography ◽  
Pars Plana Vitrectomy ◽  
Optical Coherence ◽  
Slit Lamp ◽  
Vitreous Cortex ◽  
Intraoperative Optical Coherence Tomography ◽  
Group A ◽  
Pars Plana ◽  
The Mean ◽  
Group B

ObjectiveTo evaluate the technique of peripheral vitreous shaving during vitrectomy, we measured the residual peripheral vitreous using intraoperative optical coherence tomography (iOCT).Methods and AnalysisThis retrospective study included 44 eyes that underwent 25-gauge pars plana vitrectomy with iOCT by a single surgeon. In all cases, the surgery was performed via ocular indentation. Cases in group A were treated with vitreous shaving under slit lamp microscope illumination, whereas cases in group B were treated with vitreous shaving under a wide-angle viewing system. Residual peripheral posterior vitreous-cortex detachment (PVD) was quantified by iOCT.ResultsiOCT image analysis enabled the visualisation of the angle formed between the retina and peripheral PVD around the vitreous base in all cases. After the completion of vitreous shaving, the mean length of the peripheral PVD was shorter in group A (961.7±214.7 µm) compared with group B (1925.3.7 ± 626.1 µm; p<0.01).ConclusioniOCT enabled the quantification of the residual peripheral vitreous after vitreous shaving. The quantification of the residual peripheral vitreous after different shaving procedures will be important for advocating appropriate vitreous shaving in future.

scholarly journals Changes in anterior segment optical coherence tomography following pars plana vitrectomy without tamponade

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Alireza Khodabande ◽  
Massood Mohammadi ◽  
Hamid Riazi-Esfahani ◽  
Shahab Karami ◽  
Massood Mirghorbani ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Pars Plana Vitrectomy ◽  
Anterior Segment ◽  
Anterior Chamber Depth ◽  
Optical Coherence ◽  
Mean Values ◽  
Iop Measurement ◽  
Pars Plana ◽  
The Mean

Abstract Background To evaluate changes in anterior segment morphology on anterior segment optical coherence tomography (AS-OCT) following pars plana vitrectomy (PPV) without tamponade. Methods Patients who underwent PPV without tamponade for epiretinal membrane were evaluated. Eligible patients underwent intraocular pressure (IOP) measurement and AS-OCT preoperatively as well as 1 month and 6 months post-operatively. Anterior chamber width (ACW), anterior chamber depth (ACD), trabecular iris angle (TIA), angle opening distance at 500 and 750 µm (AOD), and trabecular iris space area at 500 and 750 µm (TISA) at four quadrants were recorded and analyzed. Additionally, the mean values of TIA (MTIA), AOD (MAOD), and TISA (MTISA) for each eye (mean of four quadrants) were analyzed. Results 23 patients completed the study. The mean age of participants was 56.4 ± 3.6 years of age and 13/23 (56%) were female. Mean IOP of patients was 18.1 ± 1.1, 18.3 ± 1.1, and 18.1 ± 1.2 preoperatively,1 month post-operatively, and 6 months post-operatively, respectively. (p = 0.83). No difference was detected post-operatively in measurements of ACW, ACD, MTIA, MAOD500, MAOD750, MTISA500, and MTISA750. Conclusion Pars plana vitrectomy without tamponade was not associated with changes in anterior chamber morphology.

Vitreoschisis and retinal detachment: New insight in proliferative vitreoretinopathy

2021 ◽  
pp. 112067212110576
Author(s):  
Stanislao Rizzo ◽  
Lorenzo de Angelis ◽  
Francesco Barca ◽  
Daniela Bacherini ◽  
Lorenzo Vannozzi ◽  
...  
Keyword(s):  
Retinal Detachment ◽  
Proliferative Vitreoretinopathy ◽  
Pars Plana Vitrectomy ◽  
Rhegmatogenous Retinal Detachment ◽  
Vitreous Cortex ◽  
Group A ◽  
Pars Plana ◽  
Group B ◽  
Removal Group ◽  
Anatomical Success

Purpose To assess the occurrence of peripheral vitreoschisis-induced vitreous cortex remnants (p-VCRs) in primary rhegmatogenous retinal detachment (RD) and investigate whether the presence of p-VCRs results in a greater risk of RD recurrence, secondary to Proliferative Vitreoretinopathy (PVR) development after pars plana vitrectomy (PPV). Methods Patients who underwent PPV for primary rhegmatogenous RD between January 2016 and December 2018 were included. The presence of residual p-VCRs was confirmed intraoperatively using triamcinolone acetonide (TA). Patients with p-VCRs were divided into two groups: Group A comprised of patients who underwent PPV without p-VCR removal, while Group B included patients who underwent PPV with p-VCR removal. Results Four hundred-thirteen eyes with evidence of p-VCR were analyzed. Two-hundred-twenty-three eyes underwent PPV without VCR removal (Group A), while 190 eyes underwent PPV with p-VCR removal (Group B). Primary anatomical success was 91.5% in the Group A and 95.4% in the group B. Retinal re-detachment due to PVR occurred in 17 (7.6%) eyes in Group A and in four (2.1%) eyes in Group B within the first 3 months (p  =  0.01). Among group A, in 11 eyes, there was a diffuse posterior PVR grade C, while six eyes were focal PVR grade C. In Group B, we observed four retinal re-detachment due to focal PVR grade C. Conclusion The presence of p-VCRs seems to be associated with a higher incidence of PVR development and might also result in more complex RD recurrence, this suggests the need for more aggressive VCRs removal during the first surgery.

scholarly journals An optical coherence tomography study of residual subfoveal fluid after successful pars plana vitrectomy in patients with diabetic tractional macular detachment

Eye ◽  
2018 ◽  
Vol 32 (9) ◽  
pp. 1472-1477 ◽  
Author(s):  
Mushfig I. Karimov ◽  
Elmar M. Gasymov ◽  
Irada J. Aliyeva ◽  
Lale A. Akhundova ◽  
Gunay R. Rustambayova ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Pars Plana Vitrectomy ◽  
Optical Coherence ◽  
Macular Detachment ◽  
Pars Plana ◽  
Subfoveal Fluid

Vitreomacular interface alterations following peripheral laser retinopexy: Interface changes after laser

2019 ◽  
Vol 30 (5) ◽  
pp. 941-947
Author(s):  
Gian Marco Tosi ◽  
Tommaso Bacci ◽  
Antonio Tarantello ◽  
Davide Marigliani ◽  
Giacomo Calmanti ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Macular Hole ◽  
Pars Plana Vitrectomy ◽  
Control Analysis ◽  
Optical Coherence ◽  
Vitreomacular Adhesion ◽  
Mean Width ◽  
Pars Plana ◽  
Laser Group ◽  
Hole Closure

Aim: To demonstrate the morphological outcomes of macular hole following prophylactic peripheral laser retinopexy (PPLR). Methods: Our retrospective case-control analysis included 92 eyes, 55 in the laser group and 37 in the non-laser group. Fifty-five patients were subjected to prophylactic peripheral laser retinopexy in preparation for pars plana vitrectomy for macular hole, with and without vitreomacular adhesion (laser group). Before and after prophylactic peripheral laser retinopexy, we evaluated any changes in vitreomacular anatomy by optical coherence tomography. Optical coherence tomography changes were also analyzed in the visits preceding pars plana vitrectomy in 37 macular hole eyes not subjected to prophylactic peripheral laser retinopexy (non-laser group). Results: In the laser group, 7 out of 55 eyes (12.7%) showed macular hole closure (6 out of 18 macular hole eyes with vitreomacular adhesion (33.3%) and 1 out of 37 eyes without vitreomacular adhesion (2.7%)), while no patients showed macular hole closure in the non-laser group (p < 0.05). The mean width of the seven closed macular hole was 191.4 µm (range: 59–282 µm). In all except one of the six macular hole eyes with vitreomacular adhesion, the macular hole closed without vitreomacular adhesion release. In our analysis of the patient subgroup with vitreomacular adhesion, we observed a release of vitreomacular adhesion in 3 out of 18 eyes (16.6%) in the laser group and in 1 out of 13 eyes (7.6%) in the non-laser group (p > 0.05). Conclusion: These findings support a possible beneficial role for prophylactic peripheral laser retinopexy in selected individuals with macular hole.

Long-Term Changes of Macular Thickness after Pars Plana Vitrectomy in Optic Disc Pit Maculopathy: A Spectral-Domain Optical Coherence Tomography Study

2015 ◽  
Vol 32 (3) ◽  
pp. 302-308 ◽  
Author(s):  
Irini Chatziralli ◽  
George Theodossiadis ◽  
Dimitrios Panagiotidis ◽  
Ioannis Emfietzoglou ◽  
Vlassis Grigoropoulos ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optic Disc ◽  
Pars Plana Vitrectomy ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Optic Disc Pit ◽  
Long Term Changes ◽  
Pars Plana ◽  
Optic Disc Pit Maculopathy
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