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Swept Source Optical Coherence Tomography Angiography for Contact Lens-Related Corneal Vascularization
Joint Authors
Ang, Marcus
Cai, Yijun
Tan, Anna C. S.
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-3, 3 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-26
Country of Publication
Egypt
No. of Pages
3
Main Subjects
Abstract EN
Purpose.
To describe a novel technique of adapting a swept-source optical coherence tomography angiography (OCTA) to image corneal vascularization.
Methods.
In this pilot cross-sectional study, we obtained 3 × 3 mm scans, where 100,000 A-scans are acquired per second with optical axial resolution of 8 μm and lateral resolution of 20 μm.
This was performed with manual “XYZ” focus without the anterior segment lens, until the focus of the corneoscleral surface was clearly seen and the vessels of interest were in focus on the corresponding red-free image.
En face scans were evaluated based on image quality score and repeatability.
Results.
We analyzed scans from 10 eyes (10 patients) with corneal vascularization secondary to contact lens use in 4 quadrants, with substantial repeatability of scans in all quadrants (mean image quality score 2.7 ± 0.7; κ = 0.75 ).
There was no significant difference in image quality scores comparing quadrants (superior temporal: 2.9 ± 0.6, superior nasal: 2.8 ± 0.4, inferior temporal: 2.5 ± 0.9, and inferior nasal: 2.4 ± 1.0; P = 0.276 ) and able to differentiate deep and superficial corneal vascularization.
Conclusion.
This early clinical study suggests that the swept-source OCTA used may be useful for examining corneal vascularization, which may have potential for clinical applications such as detecting early limbal stem cell damage.
American Psychological Association (APA)
Ang, Marcus& Cai, Yijun& Tan, Anna C. S.. 2016. Swept Source Optical Coherence Tomography Angiography for Contact Lens-Related Corneal Vascularization. Journal of Ophthalmology،Vol. 2016, no. 2016, pp.1-3.
https://search.emarefa.net/detail/BIM-1110132
Modern Language Association (MLA)
Ang, Marcus…[et al.]. Swept Source Optical Coherence Tomography Angiography for Contact Lens-Related Corneal Vascularization. Journal of Ophthalmology No. 2016 (2016), pp.1-3.
https://search.emarefa.net/detail/BIM-1110132
American Medical Association (AMA)
Ang, Marcus& Cai, Yijun& Tan, Anna C. S.. Swept Source Optical Coherence Tomography Angiography for Contact Lens-Related Corneal Vascularization. Journal of Ophthalmology. 2016. Vol. 2016, no. 2016, pp.1-3.
https://search.emarefa.net/detail/BIM-1110132
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1110132