Effect of Biometric Characteristics on the Change of Biomechanical Properties of the Human Cornea due to Cataract Surgery

Table 3

Potential predictive biometric characteristics for the changes of biomechanical parameters (1 month postoperative versus preoperative).

Change; of biomechanical; parameters	Biometric characteristics
	Constant for regression formula	CSI	SAI	AL	CCT	ECC
ΔCH	−0.695	1.28	—	—	—	—
𝑟 value	—	0.302	—	—	—	—
𝑃 value	0.001	0.028	—	—	—	—
ΔCRF	6.072	—	—	—	−0.013	—
𝑟 value	—	—	—	—	−0.371	—
𝑃 value	0.03	—	—	—	0.013	—
ΔIOPg	−21.134	—	—	0.854	—	—
𝑟 value	—	—	—	0.417	—	—
𝑃 value	0.004	—	—	0.005	—	—
ΔIOPcc	−25.373	—	4.025	0.734	—	0.003
𝑟 value	—	—	0.478	0.351	—	0.339
𝑃 value	0.003	—	<0.001	0.01	—	0.013

A“—” marks parameters, which did not affect biomechanical properties.
Regression coefficient in first row of each ORA parameter is representative with a linear regression function (e.g., ΔCH = −0.695 + 1.28 · CSI).
𝑟 value refers to correlation coefficient.
𝑃 value refers to significance level.
CSI = center surround index.
SAI = surface asymmetry index.
AL = axial length.
CCT = central cornea thickness.
ECC = endothelial cell count.
CH = corneal hysteresis.
CRF = corneal resistance factor.
IOPg = Goldmann-correlated intraocular pressure.
IOPcc = corneal compensated intraocular pressure.