Abstract
The Scheimpflug principles enable the capture of focused images of objects that are not parallel to the camera and lens, such as a curved cornea. This is achieved by careful movement of the image and lens planes. In the Pentacam, this is achieved by rotation around a central axis and capture of 50 meridional pictures.
Scheimpflug photography images the anterior segment and uses ray-tracing algorithms to provide data on the anterior and posterior corneal surfaces, corneal pachymetry and anterior chamber depth. The effects of misalignment and eye movement can be reduced by using a dual Scheimpflug system with two cameras. The accuracy of measurements can be improved by incorporating Placido imaging into the device.
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Corbett, M., Maycock, N., Rosen, E., O’Brart, D. (2019). Scheimpflug Camera-Based Systems. In: Corneal Topography. Springer, Cham. https://doi.org/10.1007/978-3-030-10696-6_4
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DOI: https://doi.org/10.1007/978-3-030-10696-6_4
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