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Rhythms in axial length (AL, blue), choroidal thickness (CT, green) and intraocular pressure (IOP, red) in human subjects measured at 10 different times over 2 consecutive days (symbols), fit with fixed 24 h period sine waves. Note that the rhythms in axial length and choroidal thickness are in approximate anti-phase to one another. From Chakraborty, et al.,148 with permission from Association for Research in Vision and Ophthalmology©.
