Table 2.

Correlations between UCVA, BSCVA and TA_{3 mm}, J ₀, J ₄₅, HOA_{3 mm}, HOA_{6 mm} in keratoconic patients after FBDALK (n=47)

Variable	TA3 mm		J 0		J 45		HOA3 mm		HOA6 mm
	r	Sig.	r	Sig.	r	Sig.	r	Sig.	r	Sig.
UCVA	0.40	0.00*	0.04	0.80	−0.11	0.45	0.31	0.03*	0.15	0.33
BSCVA	0.50	0.00*	0.25	0.09	−0.02	0.89	0.17	0.27	0.10	0.52

^*Pearson correlation, significant (Sig.) at the 0.05 level. UCVA, uncorrected visual acuity expressed; BSCVA, best spectacle corrected visual acuity expressed; TA_{3 mm}, total corneal astigmatism at 3 mm from corneal apex; J ₀, cylindrical power at 90° or 180° meridian; J ₄₅, cylindrical power at 45° or 135° meridian; HOA_{3 mm}, corneal total higher-order aberration at 3 mm pupil diameter; HOA_{6 mm}, corneal total higher-order aberration at 6 mm pupil diameter