Accuracy of swept-source optical coherence tomography based biometry for intraocular lens power calculation: a retrospective cross–sectional study

Table 2 Comparison of corneal power and axial length

	SS–OCT biometer	PCI	A–scan US	p–value
Group A (n = 128)
Corneal power (D)	44.14 ± 1.47	44.16 ± 1.50	44.04 ± 1.50^‡	0.811^*
Axial length (mm)	24.56 ± 2.16	24.58 ± 2.22	24.49 ± 2.19	0.935^*
Group B (n = 36)
Corneal power (D)	44.01 ± 1.92	N/A	44.03 ± 1.88^‡	0.924^†
Axial length (mm)	25.18 ± 2.86	N/A	25.02 ± 2.82	P < .001^†

Values are presented as mean ± standard deviation
Group A; PCI feasible, Group B; PCI unfeasible
D diopters, SS–OCT swept–source optical coherence tomography, PCI partial coherence interferometry, US ultrasonography
^*p–value is for Kruskal–Wallis test
^†p–value is for Wilcoxon signed rank test
^††Measurement using manual keratometry

ISSN: 1471-2415