Evaluation of early anatomical changes following canaloplasty with anterior segment spectral-domain optical coherence tomography and ultrasound biomicroscopy

2015 ◽  
Vol 94 (5) ◽  
pp. e287-e292 ◽  
Author(s):  
Matthias Fuest ◽  
David Kuerten ◽  
Eva Koch ◽  
Jakob Becker ◽  
Thalia Hirsch ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Ultrasound Biomicroscopy ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Anatomical Changes

Pediatric Free-floating Anterior Chamber Cyst of the Iris Pigment Epithelium

2018 ◽  
Vol 1 ◽  
pp. 3
Author(s):  
Joshua S Agranat ◽  
Yoshihiro Yonekawa
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Incidental Finding ◽  
Pigment Epithelium ◽  
Anterior Segment ◽  
Ultrasound Biomicroscopy ◽  
Optical Coherence ◽  
Visual Axis ◽  
Associated Malignancy ◽  
Anatomic Locations

Iris pigment epithelial (IPE) cysts are a subset of iris cysts that arise from the IPE. They are spontaneously erupting epithelial-lined cavities that are found in various anatomic locations of the iris, including the iris pupillary margin, midzone, periphery, and free floating in the vitreous or anterior chamber. We report the case of an asymptomatic 13-year-old boy with an incidental finding of a dislodged anterior chamber cyst diagnosed on routine examination. Modern multimodal image analysis of the cyst including anterior segment optical coherence tomography and ultrasound biomicroscopy (UBM) was utilized to characterize the microstructural anatomy of the lesion. The patient was managed conservatively without complications. Cysts of the IPE typically do not affect vision or ocular health and can be monitored and observed after ascertaining no associated malignancy. Initial diagnostic investigation can include UBM and anterior segment optical coherence tomography. Intervention should be reserved only for cases where the cyst growth leads to obstruction of the visual axis and/or other secondary complications.

scholarly journals Evaluation of the Lower Punctum Parameters and Morphology Using Spectral Domain Anterior Segment Optical Coherence Tomography

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Riham S. H. M. Allam ◽  
Rania A. Ahmed
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Normal Subjects ◽  
Cross Sectional Study ◽  
Spectral Domain ◽  
Outer Diameter ◽  
Optical Coherence ◽  
Cross Sectional ◽  
Air Bubble ◽  
Inner Diameter

Purpose. To study features of the lower punctum in normal subjects using spectral domain anterior segment optical coherence tomography (SD AS-OCT).Methods. Observational cross-sectional study that included 147 punctae (76 subjects). Punctae were evaluated clinically for appearance, position, and size. AS-OCT was used to evaluate the punctal shape, contents, and junction with the vertical canaliculus. Inner and outer diameters as well as depth were measured.Results. 24 males and 52 females (mean age44±14.35 y) were included. Lower punctum was perceived by OCT to be an area with an outer diameter (mean412.16±163 μm), inner diameter (mean233.67±138.73 μm), and depth (mean251.7±126.58 μm). The OCT measured outer punctum diameter was significantly less than that measured clinically (P: 0.000). Seven major shapes were identified. The junction with the vertical canaliculus was detectable in 44%. Fluid was detected in 34%, one of which had an air bubble; however, 63% of punctae showed no contents and 4% had debris.Conclusions. AS-OCT can be a useful tool in understanding the anatomy of the punctum and distal lacrimal system as well as tear drainage physiology. Measuring the punctum size may play a role in plugs fitting.

Anterior segment optical coherence tomography and ultrasound biomicroscopy for measuring thickness of corneal and bulbar conjunctival tumours

2021 ◽  
pp. bjophthalmol-2018-312337
Author(s):  
Noémie Lauwers ◽  
Katleen Janssens ◽  
Michelle Mertens ◽  
Danny Mathysen ◽  
Martin Lammens ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Gold Standard ◽  
Imaging Techniques ◽  
Anterior Segment ◽  
Ultrasound Biomicroscopy ◽  
Thickness Measurement ◽  
Histopathological Analysis ◽  
Optical Coherence ◽  
Tumour Thickness ◽  
Thickness Measurements

Background/ObjectiveAnterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM) are two non-invasive imaging techniques used for the measurement of tumour thickness in corneal and bulbar conjunctival tumours. Histopathology (HP), however, remains the gold standard for the measurement of tumour thickness. The aim of this study was to determine whether AS-OCT and UBM are as accurate as HP for measuring tumour thickness.MethodsForty-two corneal and bulbar conjunctival tumours were imaged using AS-OCT and UBM. Images were assessed and tumour thickness was measured. Eleven patients subsequently underwent surgical excision. All specimens were measured during histopathological analysis. The correlation of the thickness measurement on HP to AS-OCT and UBM was then statistically analysed. In cases where the tumour was not excised, thickness measurement comparisons between AS-OCT and UBM were analysed.ResultsAS-OCT and UBM measurements of tumour thickness were found to be significantly positively correlated (p=<0.001), as were UBM and HP thickness measurements (p=0.031). HP and AS-OCT measurements, however, only showed a mild but non-significant positive correlation.ConclusionBoth AS-OCT and UBM are useful techniques to image and measure the thickness of corneal and conjunctival bulbar tumours. While AS-OCT provides better details than UBM, it was more limited in visualising the posterior boundary of the tumour, particularly in malignant tumours. While thickness measurements of both methodologies were correlated, neither should yet be considered as replacements to the gold standard of HP.

Spectral-Domain Optical Coherence Tomography Versus Ultrasound Biomicroscopy for Imaging of Nonpigmented Iris Tumors

2013 ◽  
Vol 156 (4) ◽  
pp. 806-812.e1 ◽  
Author(s):  
Hatem Krema ◽  
Ronaldo A. Santiago ◽  
Jose Efren Gonzalez ◽  
Charles J. Pavlin
Keyword(s):  
Optical Coherence Tomography ◽  
Ultrasound Biomicroscopy ◽  
Spectral Domain ◽  
Optical Coherence
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