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. 2022 Mar 22;70(4):1222–1228. doi: 10.4103/ijo.IJO_1845_21

Table 2.

Average±standard deviation values for corneal biomechanics indices at the different points in both experimental conditions

Baseline 15 min 30 min 45 min




1000 mL 500 mL 1000 mL 500 mL 1000 mL 500 mL 1000 mL 500 mL
IOP (mm Hg) 16.0±2.8 16.3±2.6 17.9±3.6 17.5±3.7 17.6±4.1 17.8±4.2 17.5±3.9 17.1±3.3
bIOP (mm Hg) 15.4±2.1 15.8±2.0 17.6±16.7 16.7±2.9 16.8±3.1 16.8±3.4 16.9±2.8 16.4±2.7
CCT (µm) 564.8±33.2 565.4±29.3 563.1±32.5 567.0±24.3 565.5±34.4 567.9±29.1 562.5±31.6 564.7±27.3
A1 time (ms) 7.46±0.41 7.51±0.36 7.74±0.53 7.71±0.51 7.72±0.56 7.74±0.53 7.72±0.55 7.65±0.46
A1 length (mm) 0.13±0.01 0.13±0.01 0.13±0.01 0.13±0.01 0.13±0.01 0.13±0.01 0.13±0.01 0.13±0.01
A1 velocity (m/s) 0.14±0.02 0.13±0.02 0.13±0.02 0.13±0.02 0.13±0.02 0.13±0.02 0.13±0.02 0.13±0.02
A2 time (ms) 21.89±0.40 21.79±0.39 21.71±0.31 21.74±0.42 21.77±0.39 21.72±0.44 21.78±0.36 21.86±0.40
A2 length (mm) 0.39±0.06 0.37±0.05 0.38±0.06 0.37±0.06 0.38±0.07 0.36±0.06 0.38±0.06 0.39±0.04
A2 velocity (m/s) -0.28±0.04 -0.27±0.03 -0.25±0.03 -0.26±0.03 -0.26±0.03 -0.26±0.04 -0.27±0.03 -0.27±0.04
HC time (ms) 17.16±0.54 17.06±0.32 16.99±0.28 16.94±0.40 16.86±0.41 16.91±0.45 16.89±0.41 16.89±0.24
HC radius (mm) 7.84±1.06 8.20±0.82 8.02±1.21 7.86±0.92 7.89±0.90 8.13±1.01 7.80±1.04 8.16±0.92
PD (mm) 5.02±0.32 5.07±0.31 4.89±0.34 4.91±0.39 4.92±0.40 4.95±0.40 4.92±0.38 5.02±0.34
DA (mm) 1.05±0.11 1.02±0.11 0.98±0.10 1.00±0.13 1.00±0.11 1.00±0.13 1.01±0.11 1.02±0.11

Abbreviations: IOP=non-corrected intraocular pressure; bIOP=biomechanically corrected intraocular pressure; 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