Tomiyama ES, Hu C, Marsack JD, et al. - Researchers conducted the study for quantifying changes in higher order aberrations (HOA) in myopic astigmatic eyes fitted with toric orthokeratology (TOK) and soft toric multifocal (STM) contact lenses. Ocular wavefront aberrations in both eyes of 30 adult individuals were measured and reported through the 6th order over a 5 mm dilated pupil. In myopic astigmats, toric orthokeratology caused more higher order root mean square, spherical aberration, and coma RMS than STM, however, both lens types caused an increase in HOA compared to baseline, putting patients outside the age and pupil size matched normative ranges. While the optical changes associated with these modalities are beneficial for myopia management, inducing HOAs may have unintended consequences on visual performance.