Systematic dispersion compensation for spectral domain optical coherence tomography using time-frequency analysis and iterative optimization for iridocorneal angle imaging

arxiv.org Jan 14 2022 Ophthalmology

Dispersion is a common phenomenon in optics due to the frequency dependence of the refrac tive index in polychromatic light. This issue, if left untreated in optical coherence tomography (OCT) imaging, leads to signal broadening of the coherence length and deterioration of the axial resolution. We report a new numeric method for the systemati c dispersion compensation in a spectral - domain (SD) OCT for imaging the iridocorneal angle of human cadaver eyes. The dispersion compensation for our OCT system is calculated by an automated iterative process that minimizes the wavenumber - dependent varian ce of the ridge extracted from the energy ...

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