RETINAL DETACHMENT ASSOCIATED WITH PERIPAPILLARY STAPHYLOMA IMAGED WITH SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY

2019 ◽  
Vol 13 (1) ◽  
pp. 25-29
Author(s):  
Daisuke Kunita ◽  
Makoto Inoue ◽  
Takashi Koto ◽  
Akito Hirakata
Keyword(s):  
Optical Coherence Tomography ◽  
Retinal Detachment ◽  
Optical Coherence ◽  
Swept Source ◽  
Peripapillary Staphyloma

scholarly journals Effect of rhegmatogenous retinal detachment on preoperative and postoperative retinal sensitivities

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hiroshi Noda ◽  
Shuhei Kimura ◽  
Mio Morizane Hosokawa ◽  
Yusuke Shiode ◽  
Shinichiro Doi ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Retrospective Study ◽  
Retinal Detachment ◽  
Rhegmatogenous Retinal Detachment ◽  
Scleral Buckling ◽  
Retinal Sensitivity ◽  
Optical Coherence ◽  
Measurement Point ◽  
Swept Source ◽  
Before And After

AbstractThis retrospective study investigated foveal and perifoveal retinal sensitivities using microperimetry before and after surgery for rhegmatogenous retinal detachment (RRD). Consecutive patients with RRD who underwent vitrectomy or scleral buckling were included. Comprehensive ophthalmological examinations, including microperimetry and swept-source optical coherence tomography, were performed before and 6 months after surgery. Pre- and postoperative retinal sensitivities at the fovea and 4 perifoveal measurement points farthest from the fixation point, both vertically and horizontally (superior, inferior, nasal, and temporal) were examined. A total of 34 foveal and 136 perifoveal measurement points in 34 eyes of 34 patients were evaluated. The postoperative retinal sensitivity was significantly higher than the preoperative value at foveal and perifoveal points with (P < 0.001 for both) and without (fovea: P = 0.005, perifovea: P < 0.001) RRD. The postoperative retinal sensitivity was significantly lower at foveal (P < 0.01) and perifoveal (P < 0.001) points with preoperative RRD than at points without preoperative RRD; furthermore, it was significantly better at points with ellipsoid zone (Ez) continuity than at points with Ez discontinuity (fovea: P < 0.01, perifovea: P < 0.001). RRD deteriorates retinal sensitivity, regardless of its presence or absence at the measurement point before surgery. Postoperative Ez continuity is important for good postoperative retinal sensitivity.

scholarly journals Retinal Changes before and after Silicone Oil Removal in Eyes with Rhegmatogenous Retinal Detachment Using Swept-Source Optical Coherence Tomography

2021 ◽  
Vol 10 (22) ◽  
pp. 5436
Author(s):  
Jung Wook Lee ◽  
Heeyoon Cho ◽  
Min Ho Kang ◽  
Rimkyung Hong ◽  
Mincheol Seong ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Retinal Detachment ◽  
Choroidal Thickness ◽  
Silicone Oil ◽  
Inner Plexiform Layer ◽  
Optical Coherence ◽  
Mechanical Pressure ◽  
Swept Source ◽  
Significant Difference ◽  
Fellow Eyes

This study aimed to evaluate and compare the retinal and choroidal thickness and vessel density (VD) changes between silicone oil (SO) tamponade and after SO removal using swept-source optical coherence tomography (SS-OCT) and OCT angiography (OCTA). Thirty patients who underwent pars plana vitrectomy for retinal detachment (RD) with SO tamponade were included. SS-OCT and OCTA were conducted before RD surgery, during SO tamponade, and after SO removal. A 3-dimensional volumetric wide scan protocol was used for the analysis. The segmented retina, choroidal thickness map, and peripapillary thickness were then measured. For the OCTA analysis, 4.5 × 4.5 mm scans were used. Superficial and deep capillary plexus VDs in unaffected fellow eyes and eyes after SO removal were compared. During the SO tamponade period, the thickness of the parafoveal total retina, ganglion cell-inner plexiform layer, and peripapillary retinal nerve fiber layer (ppRNFL) were significantly thinner than those of unaffected fellow eyes (p < 0.05). The parafoveal layer thickness thinning recovered up to three to six months after SO removal. Moreover, six months after SO removal, the parafoveal thickness was not significantly different compared to that of unaffected fellow eyes (p > 0.05). However, the ppRNFL thickness was significantly decreased during SO tamponade and remained unrecovered six months after SO removal. There was no significant difference in the VD on the OCTA. Thus, SO tamponade and removal for RD resulted in a change in the retinal and peripapillary thickness. This may be due to the mechanical pressure effect of SO.

scholarly journals Laser Lens Size Measurement Using Swept-Source Optical Coherence Tomography

2020 ◽  
Vol 10 (14) ◽  
pp. 4936
Author(s):  
Pingping Jia ◽  
Hong Zhao ◽  
Yuwei Qin
Keyword(s):  
Optical Coherence Tomography ◽  
High Speed ◽  
Wave Number ◽  
Radius Of Curvature ◽  
Optical Coherence ◽  
Swept Source ◽  
Laser Focusing ◽  
Fitting Algorithm ◽  
Laser Confocal Microscope ◽  
Focusing Lens

A high-speed, high-resolution swept-source optical coherence tomography (SS-OCT) is presented for focusing lens imaging and a k-domain uniform algorithm is adopted to find the wave number phase equalization. The radius of curvature of the laser focusing lens was obtained using a curve-fitting algorithm. The experimental results demonstrate that the measuring accuracy of the proposed SS-OCT system is higher than the laser confocal microscope. The SS-OCT system has great potential for surface topography measurement and defect inspection of the focusing lens.

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