scholarly journals Intraoperative Optical Coherence Tomography-Assisted 27-Gauge Vitrectomy in Eyes with Vitreoretinal Diseases

2015 ◽  
Vol 6 (2) ◽  
pp. 216-222 ◽  
Author(s):  
Hiroshi Kunikata ◽  
Toru Nakazawa
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Case Series ◽  
Retinal Disease ◽  
Optical Coherence ◽  
Vitreoretinal Disease ◽  
Intraoperative Optical Coherence Tomography ◽  
Vitreoretinal Diseases ◽  
Microincision Vitrectomy Surgery ◽  
Intraoperative Visualization

Objective: To report intraoperative optical coherence tomography (iOCT)-assisted 27-gauge microincision vitrectomy surgery (MIVS) in eyes with vitreoretinal disease. Methods: A retrospective, interventional case series performed at a single center, including 6 eyes with retinal disease that underwent iOCT-assisted 27-gauge MIVS. Results: The advantages of iOCT were most notable when it was used to evaluate, in real time, different macular areas: the pre-macula, in vitreomacular traction or epiretinal membrane; the intra-macula, in macular edema or macular hole; and the sub-macula, in macular detachment. Real-time imaging and the minimization of shadows cast on the underlying tissues by the 27-gauge instrumentation made it possible to quickly select the best procedure at each critical juncture of the surgery. No patients experienced any complications. Conclusion: Real-time iOCT imaging during 27-gauge MIVS provided excellent intraoperative visualization of retinal tissues without causing significant obstructions to the surgeon. The positive feedback from the system allowed the surgeon to better judge the necessity of additional surgical procedures.

scholarly journals Feasibility and utility of intraoperative optical coherence tomography during vitreoretinal surgery: A 4-year report in Chinese population

2020 ◽  
pp. 2140004
Author(s):  
Jiwei Tao ◽  
Huan Chen ◽  
Jiafeng Yu ◽  
Dan Cheng ◽  
Yiqi Chen ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Macular Hole ◽  
Chinese Population ◽  
Operative Procedure ◽  
Case Series ◽  
Vitreoretinal Surgery ◽  
Vitreous Hemorrhage ◽  
Optical Coherence ◽  
Surgical Methods ◽  
Intraoperative Optical Coherence Tomography

Purpose: To introduce the application of intraoperative optical coherence tomography (iOCT) in pars plana vitrectomy (PPV) for various vitreoretinal diseases, and to report the 4-year assessment of feasibility and utility in Chinese population. Methods: Retrospective case series of patients who underwent PPV and iOCT scan at Eye Hospital of Wenzhou Medical College from January 2016 to January 2020. Clinical characteristics were documented before operation, and we intraoperatively recorded the time and results of iOCT scanning, specific surgical maneuvers performed, the consistency with the planned strategies before surgery, the type of OCT images obtained, and adverse events (AEs). The surgeon feedback was collected to evaluate the utility of iOCT during surgery. Results: 339 eyes successfully completed iOCT scan, with an average scanning time of [Formula: see text][Formula: see text]min, including 59 cases of idiopathic macular hole (iMH), 134 cases of idiopathic epiretinal membrane (iERM), 33 cases of lamellar macular hole (LMH), 40 cases of high myopic maculopathy, 13 cases of vitreous macular traction (VMT), 60 cases of dense vitreous hemorrhage (VH). The iOCT findings were not consistent with examination under the operating microscope in 49 cases (14.5%), including 29 cases (8.6%) which changed the operation strategies during surgery. The Hole-door phenomenon arose in 20 cases (33.9%) of iMH and 3 cases (25%) of high myopic MH after ILMs peeling. Moreover, the residue ERM was observed in nine cases (6.7%) of iERM and two cases (14.3%) in high myopic ERM after ILMs peeling. Some new surgical methods could also be confirmed using iOCT. Conclusion: The application of iOCT has a significant clinical functionality in vitreoretinal surgery, providing the surgeon with a new surgical understanding, guiding the selection of a more reasonable operative procedure during surgery, predicting postoperative recovery and improving postoperative outcomes.

scholarly journals Optical Coherence Tomography Observation of Gonio Structures during Microhook Ab Interno Trabeculotomy

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Masaki Tanito
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Trabecular Meshwork ◽  
Case Series ◽  
Optical Coherence ◽  
The Real ◽  
Line Scan ◽  
Feasibility Assessment ◽  
Integrated Optical ◽  
Ab Interno

Introduction. Intraoperative observation of ocular structures using microscope-integrated optical coherence tomography (iOCT) has been adopted recently. I report my initial feasibility assessment of iOCT for the incised trabecular meshwork observation during microhook ab interno trabeculotomy. Case Series. Both the nasal and temporal sides or either side of the trabecular meshwork/inner wall of Schlemm’s canal was incised more than 3 clock hours. After then, under observation using a Swan-Jacob gonioprism lens with the real-time 5-line scan mode, OCT images of the area were successfully acquired in 10 (83%) of 12 sides in nine eyes. Based on the appearance of the acquired images of the 10 sides, the trabeculotomy cleft could be classified into three incisional patterns, that is, six (60%) anterior-opening patterns (posterior-based flap), three (30%) middle-opening patterns (posterior- and anterior-based flaps), and one (10%) posterior-opening pattern (anterior-based flap), according to the predominant locations of the trabecular meshwork flaps. Conclusion. Intraoperative observation of the gonio structures including the trabeculotomy cleft was feasible using the RESCAN 700 in combination with a gonioprism.

scholarly journals Intraoperative Optical Coherence Tomography Using the RESCAN 700: Preliminary Results in Collagen Crosslinking

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Natasha Pahuja ◽  
Rohit Shetty ◽  
Chaitra Jayadev ◽  
Rudy Nuijts ◽  
Bharath Hedge ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Imaging Study ◽  
Software Tool ◽  
Optical Coherence ◽  
Average Depth ◽  
Collagen Crosslinking ◽  
Intraoperative Optical Coherence Tomography ◽  
The Mean

Purpose. To compare the penetration of riboflavin using a microscope-integrated real time spectral domain optical coherence tomography (ZEISS OPMI LUMERA 700 and ZEISS RESCAN 700) in keratoconus patients undergoing accelerated collagen crosslinking (ACXL) between epithelium on (epi-on) and epithelium off (epi-off).Methods. Intraoperative images were obtained during each of the procedures. Seven keratoconus patients underwent epi-on ACXL and four underwent epi-off ACXL. A software tool was developed using Microsoft.NET and Open Computer Vision (OpenCV) libraries for image analysis. Pre- and postprocedure images were analyzed for changes in the corneal hyperreflectance pattern as a measure of the depth of riboflavin penetration.Results. The mean corneal hyperreflectance in the epi-on group was 12.97 ± 1.49 gray scale units (GSU) before instillation of riboflavin and 14.46 ± 2.09 GSU after AXCL (P= 0.019) while in the epi-off group it was 11.43 ± 2.68 GSU and 16.98 ± 8.49 GSU, respectively (P= 0.002). The average depth of the band of hyperreflectance in the epi-on group was 149.39 ± 15.63 microns and in the epi-off group it was 191.04 ± 32.18 microns.Conclusion. This novelin vivo, real time imaging study demonstrates riboflavin penetration during epi-on and epi-off ACXL.

Real-Time Assessment of Intraoperative Vaulting in Implantable Collamer Lens and Correlation with Postoperative Vaulting

2016 ◽  
Vol 27 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Jeewan S. Titiyal ◽  
Manpreet Kaur ◽  
Suman Sahu ◽  
Namrata Sharma ◽  
Rajesh Sinha
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Implantable Collamer Lens ◽  
Paired Samples ◽  
Snellen Visual Acuity ◽  
Intraoperative Optical Coherence Tomography ◽  
The Mean

Purpose To assess the intraoperative vaulting in patients undergoing implantable collamer lens (ICL) implantation with microscope-integrated intraoperative optical coherence tomography (iOCT) and correlate it with the postoperative vaulting. Methods Forty eyes of 22 consecutive patients undergoing ICL implantation were prospectively evaluated. Vaulting was measured intraoperatively using microscope-integrated iOCT. The ICL-lenticular relationship was dynamically assessed throughout the surgery. Postoperative vaulting was measured using anterior segment optical coherence tomography on the first postoperative day and after 1 month and compared with the intraoperative vaulting. Uncorrected and best-corrected Snellen visual acuity, intraocular pressure (IOP), and anterior and posterior segments were assessed in all cases. Results The mean central vaulting noted intraoperatively was 558.4 ± 122.8 µm. Postoperative mean vaulting was 576.0 ± 131.2 µm on day 1 and 551.1 ± 122.5 µm on day 30. There was a significant correlation between the intraoperative and the postoperative day 1 vaulting (paired samples correlation: 0.969, p<0.001) and day 30 vaulting (paired samples correlation: 0.945, p<0.001). An ICL-lenticular touch was not noted at any time during the surgery. The postoperative course was uneventful and no patient developed raised IOP or lenticular changes by the last follow-up. Conclusions Intraoperative vaulting correlates well with postoperative vaulting and can aid in on-table detection of extremes of vaulting and decision-making. It enhances the safety of the surgical procedure by providing a real-time display of the intraoperative manipulations.

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