1. Automatic focus method using interference fringes magnitudes in retinal optical coherence tomography

    Automatic focus method using interference fringes magnitudes in retinal optical coherence tomography

    In retinal optical coherence tomography (OCT), it is significant to focus the scan beam on the retina layers of the human eye fast to acquire high-quality OCT images. The refrac- tive errors of the human eye are usually compensated by shifting the optical lens in the sample arm manually or electrically. Otherwise, refractive errors of the human eye will cause axial focal shift of the scanning beam and blur the OCT images. We propose a fast automatic focus method using the interference fringes magnitudes of the whole retinal layers to determine the best refrac- tive correction position of motor-driven optical ...

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