Relationship between corneal biomechanical parameters and corneal sublayer thickness measured by Corvis ST and UHR-OCT in keratoconus and normal eyes

Table 5 Stepwise multiple linear regression model analysis for predicting theoretical SP-A1 in three groups

Groups	Main predictors	B	SE	β	t	P	Adjusted R²	F	P
Normal	Constant	−73.731	40.029		−1.842	0.085	0.577	20.481	0.000
Normal	STT	0.376	0.083	0.760	4.526	0.000
KC group	Constant	138.830	46.527		2.984	0.007	0.598	18.854	0.000
	Steep K	−3.077	0.669	−0.608	−4.599	0.000
	BLT	5.266	1.731	0.402	3.042	0.006
SKC group	Constant	−76.349	20.140		−3.791	0.000	0.619	83.792	0.000
SKC group	STT	0.399	0.044	0.791	9.154	0.000

Normal = normal group; KC = keratoconus group; SKC = suspected keratoconus group; B = unstandardized coefficients; SE = standard error of unstandardized coefficients; β = standardized coefficients (beta); t = unstandardized coefficient/standard error; STT = stromal thickness; BLT = Bowman’s layer thickness; Steep K = steep keratometry

ISSN: 2326-0254