Fig. 3From: Comparison of corneal aberrations from anterior segment swept source OCT versus Placido-topography combined spectral domain OCT in cataract patientsDouble-angle plots of corneal astigmatism converted from anterior, total, and posterior astigmatic Zernike coefficients for SS-OCT (left) and Placido + SD-OCT (right). SD-OCT, spectral-domain optical coherence tomography; SS-OCT, swept-source optical coherence tomographyBack to article page