Cosine harmonics from 1^st to 6^th order in a subject with CCT equal to: (a) 503 micron; (b) 525 micron.

<p>The numbers on the horizontal axis represent the order of the harmonics.</p

Deformation amplitude (DA) between the fellow eyes of the subjects.

<p>The means±SEM are plotted. SEM is the standard error of the mean.</p

Waveforms reported by Ocular response analyzer (ORA) and Corvis-ST: (a) Example of ORA waveform.

<p>The two peaks represent the instant the cornea becomes flat during the forward and backward motion of the cornea; (b) the same OA waveform now inverted about the straight line joining the two peaks in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0097591#pone-0097591-g001" target="_blank">figure 1a</a>; (c) Example of the apex displacement in mm measured by CoST.</p

b_i RMS (root mean square) under the curve (AUC) from ORA and CoST segregated by the fellow eyes (OD = right and OS = left eye).

<p>The means±SEM are plotted. SEM is the standard error of the mean.</p

a_i RMS (root mean square) under the curve (AUC) from ORA and CoST segregated by the fellow eyes (OD = right and OS = left eye).

<p>The means±SEM are plotted. SEM is the standard error of the mean.</p

Sine harmonics from 1^st to 6^th order in a subject with CCT equal to: (a) 553 micron; (b) 581 micron.

<p>The numbers on the horizontal axis represent the order of the harmonics.</p