Anterior segment optical coherence tomography angiography in the assessment of ocular surface lesions

2021 ◽  
Author(s):  
William W. Binotti ◽  
Huan Mills ◽  
Ricardo M. Nosé ◽  
Helen K. Wu ◽  
Jay S. Duker ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Ocular Surface ◽  
Optical Coherence Tomography Angiography ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Ocular Surface Lesions

High resolution anterior segment optical coherence tomography of ocular surface lesions: a review and handbook

2020 ◽  
pp. 1-15
Author(s):  
Nandini Venkateswaran ◽  
Carolina Mercado ◽  
Sarah C. Wall ◽  
Anat Galor ◽  
Jianhua Wang ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
High Resolution ◽  
Ocular Surface ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Ocular Surface Lesions

scholarly journals Non-malignant conjunctival epithelial masses with ocular surface squamous neoplasia-like optical coherence tomography features

2021 ◽  
Author(s):  
Ágnes Füst ◽  
Jeannette Tóth ◽  
László Imre ◽  
Zoltán Zsolt Nagy
Keyword(s):  
Optical Coherence Tomography ◽  
Ocular Surface ◽  
Anterior Segment ◽  
Histological Diagnosis ◽  
Optical Coherence ◽  
Ocular Surface Squamous Neoplasia ◽  
Ocular Coherence Tomography ◽  
Maximal Thickness ◽  
Epithelial Lesions ◽  
Mass Lesions

Abstract Purpose To observe and describe the anterior segment optical coherence tomography features of limbally localised non-malignant epithelial mass lesions Methods Thirteen patients (age: 66.9 ± 16.3 years) with conjunctival mass suggesting ocular surface squamous neoplasia with biomicroscopic examination were imaged using anterior segment ocular coherence tomography (anterior segment optical coherence tomography)/Cirrus HD-OCT, Model 4000, Carl Zeiss Meditec, Inc., Dublin, CA, and Spectralis HRA + OCT system, Heidelberg Engineering, Vista, CA/. Cases with ocular surface squamous neoplasia-like anterior segment optical coherence tomography (hyperreflective, thickened epithelium and an abrupt transition from normal to abnormal) were included in the study. Maximal thickness of the epithelium was measured. Histological diagnosis was gained from an excisional or incisional biopsy or impression cytology specimens. Results In six patients (age: 68.5 ± 15.4 years) with ocular surface squamous neoplasia-like anterior segment optical coherence tomography features, the histological diagnosis was other than ocular surface squamous neoplasia (papilloma, parakeratosis and a keratotic plaque with mild dysplasia), and ocular surface squamous neoplasia in seven cases (age: 65.6 ± 18.0 years). The maximal epithelial thickness was between 250 and 859 µm in non-ocular surface squamous neoplasia cases and between 252 and 596 µm in ocular surface squamous neoplasia cases. Conclusion Non-malignant epithelial lesions can mimic ocular surface squamous neoplasia on anterior segment optical coherence tomography.

scholarly journals Diagnosis of Ocular Surface Lesions Using Ultra–High-Resolution Optical Coherence Tomography

Ophthalmology ◽  
2013 ◽  
Vol 120 (5) ◽  
pp. 883-891 ◽  
Author(s):  
Mohamed Abou Shousha ◽  
Carol L. Karp ◽  
Ana Paula Canto ◽  
Kelly Hodson ◽  
Patrick Oellers ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
High Resolution ◽  
Ocular Surface ◽  
Optical Coherence ◽  
Ocular Surface Lesions

Optical Coherence Tomography Angiography for Anterior Segment Vasculature Imaging

Ophthalmology ◽  
2015 ◽  
Vol 122 (9) ◽  
pp. 1740-1747 ◽  
Author(s):  
Marcus Ang ◽  
Dawn A. Sim ◽  
Pearse A. Keane ◽  
Chelvin C.A. Sng ◽  
Catherine A. Egan ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Anterior Segment ◽  
Optical Coherence

scholarly journals Repeatability of ocular surface vessel density measurements with optical coherence tomography angiography

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Sijie Cai ◽  
Fengping Zhao ◽  
Chixin Du
Keyword(s):  
Optical Coherence Tomography ◽  
Ocular Surface ◽  
Optical Coherence Tomography Angiography ◽  
Imaging System ◽  
Intraclass Correlation ◽  
Vessel Density ◽  
Optical Coherence ◽  
Significant Difference ◽  
Surface Vessel ◽  
Healthy Eyes

Abstract Background To determine the repeatability of measurements of ocular surface vessel density in normal and diseased eyes using optical coherence tomography angiography (OCTA). Methods Ten normal eyes, 10 pinguecula eyes, and 10 pterygium eyes of 30 volunteers were subjected to OCTA (AngioVue Imaging System, Optovue, Inc.). For scanning, we used the corneal adapter module. Each eye was scanned three times in the nasal and temporal directions, separately. AngioVue software was used to generate the ocular surface vessel density. Ocular surface vessel density was defined as the proportion of vessel area with blood flow to the total measurement area (3 × 3 mm2). Intersession repeatability of the measurement was summarized as the coefficient of variation (CV), and intraclass correlation coefficients (ICC) were calculated by variance component models. Results The CVs were less than 5% in all subjects, and the ICCs exceeded 0.9; thus, all measurements showed good repeatability. The nasal vessels densities differed significantly between healthy eyes and eyes with pterygium (P < 0.05); however, there was no significant difference between healthy eyes and eyes with pinguecula (P = 0.466). Conclusions These results suggest that measurement of ocular surface vessel density by OCTA in normal eyes and eyes with pterygium and pinguecula is repeatable. This preliminary research describes a quantitative and visual method for assessing vessel density of the ocular surface with a high level of consistency.

scholarly journals Optical Coherence Tomography Angiography Imaging to monitor Anti-VEGF treatment of Corneal Vascularization in a Rabbit Model

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Kavya Devarajan ◽  
Hon Shing Ong ◽  
Nyein C. Lwin ◽  
Jacqueline Chua ◽  
Leopold Schmetterer ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Imaging Technique ◽  
Anterior Segment ◽  
Rabbit Model ◽  
Saline Group ◽  
Optical Coherence ◽  
Conjunctival Injection ◽  
Anti Vegf ◽  
Significant Difference

AbstractOptical coherence tomography angiography (OCTA) is a well-established non-invasive retinal vascular imaging technique. It has been recently adapted to image the anterior segment and has shown good potential to image corneal vascularisation. The purpose of the study is to evaluate the usefulness of OCTA to monitor regression of corneal vessels following anti-VEGF (vascular endothelial growth factor) treatment using a previously established corneal vascularisation rabbit model. The regression of vessels following the treatment with aflibercept and ranibizumab anti-VEGFs using both topical instillation and sub-conjunctival injection was quantified using OCTA and compared with ICGA (indocyanine green angiography). Overall vessel density measurements using OCTA showed good correlation (r = 0.988, p < 0.001) with ICGA, with no significant difference between the two treatment groups (p = 0.795). It was also shown that OCTA provided good repeatability outcomes of the quantitative measurements. Using Bland-Altman plots, vessel growth density values between anti-VEGF treatments were compared to control saline group. It was observed that aflibercept provided longer lasting effect than ranibizumab. We also observed that in both drugs, the topical route of administration topical provided longer regression outcomes compared to one-time sub-conjunctival injection. Thereby, with this pilot study, it was demonstrated that OCTA is a reliable imaging technique to follow-up and monitor corneal vascularisation and its treatment quantitatively.

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