Golden angle based scanning for robust corneal topography with OCT
| Autor: | David Goldblum, Philippe C. Cattin, Joerg Wagner |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
genetic structures Zernike polynomials Optical power Iterative reconstruction 01 natural sciences Surgical planning Article 010309 optics 03 medical and health sciences symbols.namesake 0302 clinical medicine Optics Optical coherence tomography Cornea 0103 physical sciences medicine medicine.diagnostic_test business.industry Corneal topography Atomic and Molecular Physics and Optics eye diseases medicine.anatomical_structure 030221 ophthalmology & optometry symbols Golden angle sense organs business Biotechnology |
| Zdroj: | Biomedical optics express. 8(2) |
| ISSN: | 2156-7085 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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