1. Axial Scaling Is Independent of Ocular Magnification in OCT Images

    Axial Scaling Is Independent of Ocular Magnification in OCT Images

    We read with great interest the article by Röck et al., 1 as it is a well-known physical principle of optical coherence tomography (OCT) and its basis, low-coherence interferometry, that magnification of the image of the sample using an objective lens or eyes with varying refractive power applies only in the transverse dimension, 2 not the axial dimension. 3 In this article, the authors collected OCT scans of a subretinal implant of known thickness, but found a significant correlation between observed thickness of the implant and the subjects' axial length. Regrettably, the authors made no mention of the surprising ...

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