scholarly journals Early bleb parameters as long-term prognostic factors for surgical success: a retrospective observational study using three-dimensional anterior-segment optical coherence tomography

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Utako Tsutsumi-Kuroda ◽  
Sachi Kojima ◽  
Ayako Fukushima ◽  
Kei-Ichi Nakashima ◽  
Keiichiro Iwao ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Prognostic Factors ◽  
Observational Study ◽  
Anterior Segment ◽  
Three Dimensional ◽  
Retrospective Observational Study ◽  
Optical Coherence ◽  
Surgical Success

Accuracy of anterior segment optical coherence tomography for pre-operative localization of insertions of extraocular recti muscles

2020 ◽  
pp. 112067212097119
Author(s):  
Sreeram Jayaraj ◽  
Anupam Singh ◽  
Ajai Agrawal ◽  
Rakesh Panyala ◽  
Ramanuj Samanta ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Observational Study ◽  
Anterior Segment ◽  
Accurate Method ◽  
Strabismus Surgery ◽  
Optical Coherence ◽  
Altman Analysis ◽  
Bland Altman Analysis ◽  
Squint Surgery ◽  
Level Of Agreement

Introduction: To study the accuracy of anterior segment optical coherence tomography (AS-OCT) function of Cirrus HD-OCT 500 (Carl Zeiss Meditec, Dublin, CA) in calculating the insertion of rectus muscles from the limbus in patients undergoing primary squint surgery. Methodology: A prospective, double-masked, observational study was conducted on 128 muscles of 46 patients with strabismus who were planned for strabismus surgery between January 2019 and December 2019. Insertion distance from limbus was measured using AS-OCT function of Cirrus HD-OCT 500 preoperatively. Intraoperative measurements were taken using Castroviejo caliper. A Bland-Altman analysis was performed to determine the agreement between the readings. Results: A total of 128 muscles were successfully imaged and evaluated, including 13 superior recti (10.15%), 23 inferior recti (17.96%), 35 medial recti (27.34%) and 57 lateral recti (44.53%). 124 muscles (96.9%) were within 1mm difference, which was considered clinically acceptable. Bland-Altman plots showed the level of agreement between the two methods was good. Conclusion: Anterior segment scan function of Cirrus HD-OCT 500 is an accurate method to detect the insertion of extraocular recti muscles in patients of primary strabismus surgery.

scholarly journals Optical distortion correction in Optical Coherence Tomography for quantitative ocular anterior segment by three-dimensional imaging

2010 ◽  
Vol 18 (3) ◽  
pp. 2782 ◽  
Author(s):  
Sergio Ortiz ◽  
Damian Siedlecki ◽  
Ireneusz Grulkowski ◽  
Laura Remon ◽  
Daniel Pascual ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Three Dimensional ◽  
Distortion Correction ◽  
Optical Distortion ◽  
Optical Coherence ◽  
Three Dimensional Imaging

Three-dimensional Anterior Segment Optical Coherence Tomography of Filtering Blebs After Trabeculectomy

2008 ◽  
Vol 17 (3) ◽  
pp. 193-196 ◽  
Author(s):  
Masahiro Miura ◽  
Keisuke Kawana ◽  
Takuya Iwasaki ◽  
Takahiro Kiuchi ◽  
Tetsuro Oshika ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Three Dimensional ◽  
Optical Coherence

Photoreceptor morphology and correlation with subretinal fluid chronicity associated with choroidal nevus

2019 ◽  
Vol 104 (6) ◽  
pp. 863-867 ◽  
Author(s):  
Antonio Yaghy ◽  
Michael D Yu ◽  
Lauren A Dalvin ◽  
Mehdi Mazloumi ◽  
Sandor R Ferenczy ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Observational Study ◽  
Subretinal Fluid ◽  
Retrospective Observational Study ◽  
Optical Coherence ◽  
Progressive Change ◽  
Choroidal Nevus ◽  
Over Time ◽  
Choroidal Nevi

BackgroundSubretinal fluid (SRF) can be associated with choroidal nevus and can cause progressive change in the morphology of overlying photoreceptors.MethodsA retrospective observational study was performed using optical coherence tomography to assess nevus and SRF features, as well as photoreceptor morphology over time.ResultsThere were 232 choroidal nevi that presented with or developed SRF. Photoreceptor morphology at presentation was classified as normal (n=60, 26%), shaggy (elongated) (n=73, 31%), retracted (stalactite appearance) (n=76, 33%), or absent (n=23, 10%). There was a progression in photoreceptor morphology with increasing SRF chronicity (p=0.003). For nevus presenting with normal photoreceptors and later developed SRF (n=60), photoreceptors became shaggy in 29 (48%), retracted in 24 (40%), and absent in 7 (12%) after 15, 19 and 22 months, respectively. For nevus presenting with SRF and shaggy photoreceptors (n=73), progression to retracted photoreceptors occurred in 31 (42%) after a mean of 22 months; for nevus with SRF and retracted photoreceptors (n=76), progression to absent photoreceptors occurred in 19 (25%) after a mean of 34 months; and for nevus with absent photoreceptors (n=23), photoreceptor morphology showed no change after mean follow-up of 33 months. Risk of nevus growth to melanoma was not associated with photoreceptor morphology at presentation (p=0.19).ConclusionIn eyes with choroidal nevus and SRF, there is a longitudinal evolution in photoreceptor morphology from normal to shaggy to retracted then absent with increasing SRF chronicity. SRF chronicity, as indicated by photoreceptor morphology on presentation, did not correlate with nevus growth to melanoma.

Characteristics of early filtering blebs that predict successful trabeculectomy identified via three-dimensional anterior segment optical coherence tomography

2017 ◽  
Vol 102 (6) ◽  
pp. 796-801 ◽  
Author(s):  
Akiko Narita ◽  
Yuki Morizane ◽  
Tomoe Miyake ◽  
Jiro Seguchi ◽  
Tetsuya Baba ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Wall Thickness ◽  
Univariate Analysis ◽  
Anterior Segment ◽  
Three Dimensional ◽  
Multivariate Logistic Regression Analysis ◽  
Case Series ◽  
Maximum Height ◽  
Optical Coherence ◽  
Case Series Study

Background/aimsTo identify the cross-sectional characteristics of filtering blebs at 2 weeks post-trabeculectomy associated with intraocular pressure (IOP) control at 1 year post-trabeculectomy.MethodsNinety-nine eyes of 94 patients who had undergone primary trabeculectomy were included in this retrospective consecutive case series study. Surgical success was defined as an IOP ≤15 mm Hg and a >20% reduction in IOP without glaucoma medication or additional glaucoma surgeries at 1 year post-trabeculectomy. Subjects were classified into two groups according to whether surgery was successful or unsuccessful. Blebs were examined using swept-source three-dimensional anterior segment optical coherence tomography and evaluated for quantitative parameters, including maximum height, maximum wall thickness and ratio of hyporeflective space of the wall, as well as qualitative parameters, including multiple parallel hyporeflective layers within the wall (striping phenomenon), decreased visibility of the sclera underlying the bleb (shading phenomenon) and cyst-like structures of the wall.ResultsSeventy-seven eyes (77.8%) were assigned to the successful group and 22 (22.2%) to the unsuccessful group. Univariate analysis showed significant differences between the groups regarding maximum bleb height (p=0.044), maximum bleb wall thickness (p=0.017) and the striping phenomenon of the bleb wall (p=0.007). Multivariate logistic regression analysis confirmed that the striping phenomenon at 2 weeks post-trabeculectomy was significantly associated with success at 1 year post-trabeculectomy (OR 3.405; 95% CI 1.059 to 10.947; p=0.040).ConclusionTaller blebs with thicker walls that showed the striping phenomenon at 2 weeks post-trabeculectomy appeared to predict good IOP control at 1 year post-trabeculectomy.

Serial anterior segment optical coherence tomography post autologous simple limbal epithelial transplantation

2020 ◽  
Vol 13 (12) ◽  
pp. e236692
Author(s):  
Anahita Kate ◽  
Swapna S Shanbhag ◽  
Ritin Goyal ◽  
Sayan Basu
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Human Amniotic Membrane ◽  
Optical Coherence ◽  
Long Term Follow Up ◽  
Limbal Stem Cell ◽  
Contralateral Eye ◽  
The Right

A 24-year-old young man presented to us with total limbal stem cell deficiency (LSCD) in the right eye 1 year post ocular chemical burn. The patient subsequently underwent limbal biopsy in the healthy contralateral eye and autologous simple limbal epithelial transplantation in the right eye. The patient was followed up with sequential imaging of the cornea with high-resolution anterior segment optical coherence tomography (HR-ASOCT) for 3 years. The serial HR-ASOCT imaging in the operated eye showed regeneration of the epithelium from the limbal transplant over the human amniotic membrane (hAM) with integration of the transplant within the cornea with subepithelial retention of the hAM. Over the long-term follow-up, thinning of the hAM and thickening of the epithelium was noted. At 3 years, the cornea maintained an intact epithelium with no signs of recurrence of LSCD.

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