Golden Angle Based Scanning for Robust Corneal Topography with OCT

Wagner, Joerg and Goldblum, David and Cattin, Philippe C.. (2017) Golden Angle Based Scanning for Robust Corneal Topography with OCT. Biomedical Optics Express, 8 (2). pp. 475-483.

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Official URL: http://edoc.unibas.ch/54868/

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Corneal topography allows the assessment of the cornea's refractive power which is crucial for diagnostics and surgical planning. The use of optical coherence tomography (OCT) for corneal topography is still limited. One limitation is the susceptibility to disturbances like blinking of the eye. This can result in partially corrupted scans that cannot be evaluated using common methods. We present a new scanning method for reliable corneal topography from partial scans. Based on the golden angle, the method features a balanced scan point distribution which refines over measurement time and remains balanced when part of the scan is removed. The performance of the method is assessed numerically and by measurements of test surfaces. The results confirm that the method enables numerically well-conditioned and reliable corneal topography from partially corrupted scans and reduces the need for repeated measurements in case of abrupt disturbances.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedical Engineering > Imaging and Computational Modelling > Center for medical Image Analysis & Navigation (Cattin)
UniBasel Contributors:Cattin, Philippe Claude
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Optical Society of America
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:09 Oct 2017 14:30
Deposited On:09 Oct 2017 14:30

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