Changes in intraocular pressure values measured with noncontact tonometer (NCT), ocular response analyzer (ORA) and corvis scheimpflug technology tonometer (CST) in the early phase after small incision lenticule extraction (SMILE)

Table 5 The stepwise multiple linear regression models for predicting theoretical post-op IOP values (n = 22)

Dependent Variables	Main Predictors	B^a	SE^b	t^c	Sig.	β^d	Regression Equation	Adjusted R²	F^e	Sig.
Pre-op NCT-IOP	Practical postop NCT-IOP	0.646	0.167	3.873	<0.001	0.655	Theoretical post-op NCT-IOP (mmHg) = 0.646 × Practical post-op NCT-IOP(mmHg) + 8.774(mmHg)	0.400	15.000	<0.001
	Constant	8.774	1.688	5.198	0.001	-		0.400	15.000	<0.001
Pre-op ORAIOPcc	Practical postop IOPcc	0.558	0.126	4.445	<0.001	0.705	Theoretical post-op IOPcc (mmHg) = 0.558 × practical postoperative IOPcc (mmHg) + 7.166(mmHg)	0.472	19.755	<0.001
	Constant	7.166	1.800	3.981	0.001	-		0.472	19.755	<0.001
Pre-op ORAIOPg	Practical postopIOPg	0.848	0.167	5.084	<0.001	0.751	Theoretical post-op IOPg (mmHg) = 0.848 × practical postoperative IOPg (mmHg) + 7.024 (mmHg)	0.542	25.850	<0.001
	Constant	7.024	1.654	4.247	<0.001	-		0.542	25.850	<0.001
Pre-op CST-IOP	Post-op AT1	8.079	1.660	4.866	<0.001	0.680	Theoretical post-op CST-IOP (mmHg) = 8.079 × post-op AT1 (ms) + 0.035 × pre-op CCT(μm) + 0.515 × post-op PD (mm) - 59.47 mmHg	0.596	11.336	<0.001
	Pre-op CCT	0.035	0.013	2.732	0.014	0.379
	Post-op PD	0.515	0.237	2.176	0.043	0.304
	Constant	−59.47	13.524	−4.397	<0.001	-

Pre-op pre-operative, Post-op post-operative, AT1 applanation time 1, CCT central corneal thickness, PDpeak distance, Sig. Significance
^aUnstandardized Coefficients
^bStandard Error of Unstandardized Coefficients
^cUnstandardized Coefficients/Standard Error
^dStandardized Coefficients (Beta)
^eMultiple Linear Regression Model (Stepwise)

ISSN: 1471-2415