Table 3.

Pearsonxs product-moment correlation coefficients (Pearson r [P value]) of changes in intraocular pressure with changes in corneal biomechanical parameters at the different points of measure

	Changes in intraocular pressure (mm Hg)
	After 15 min of water intake	After 30 min of water intake	After 45 min of water intake
CCT (µm)	−0.191 (0.243)	−0.180 (0.273)	−0.090 (0.588)
A1 time (ms)	0.977 (<0.001) ***	0.975 (<0.001) ***	0.966 (<0.001) ***
A1 length (mm)	0.503 (0.001) **	0.590 (<0.001) ***	0.632 (<0.001) ***
A1 velocity (m/s)	−0.366 (0.022) *	−0.253 (0.120)	−0.406 (0.010) *
A2 time (ms)	−0.735 (<0.001) ***	−0.664 (<0.001) ***	−0.769 (<0.001) ***
A2 length (mm)	0.060 (0.719)	0.255 (0.117)	0.281 (0.083)
A2 velocity (m/s)	0.544 (<0.001) ***	0.564 (<0.001) ***	0.576 (<0.001) ***
HC time (ms)	0.210 (0.199)	−0.019 (0.910)	0.106 (0.520)
HC radius (mm)	0.193 (0.293)	0.019 (0.923)	0.248 (0.128)
PD (mm)	−0.786 (<0.001) ***	−0.871 (<0.001) ***	−0.813 (<0.001) ***
DA (mm)	−0.735 (<0.001) ***	−0.673 (<0.001) ***	−0.724 (<0.001) ***

Abbreviations: CCT=central corneal thickness; A1 time=time of the first applanation; A1 length=length of the first applanation; A1 velocity=velocity of the first applanation; A2 time=time of the second applanation; A2 length=length of the second applanation; A2 velocity=velocity of the second applanation; HC time=time for reaching the highest concavity; HC radius=central curvature radius at the highest concavity; PD=distance of the two apexes of the cornea at the highest concavity; DA=maximum deformation amplitude of the cornea at the highest concavity. *, **, and *** denote statistically significant differences (P<0.05, 0.01, and 0.001, respectively)