Comparison of Toric and Spherical Orthokeratology Lenses in Patients with Astigmatism

Table 2

Baseline parameters (mean ± SD) of the two groups.

Parameters	Toric lens group 25 patients, 25 eyes	Spherical lens group 25 patients, 25 eyes	value
Age (y)	10.67 ± 1.46	11.45 ± 1.63	0.078
Gender (male/female)	11/14	11/14	1.000
Refractive M (D)	−4.01 ± 1.46	−3.64 ± 1.37	0.366
UCVA (logMAR)	0.94 ± 0.32	0.93 ± 0.28	0.866
BCVA (logMAR)	−0.04 ± 0.04	−0.03 ± 0.04	0.779
Axial length (mm)	25.12 ± 0.90	25.01 ± 0.81	0.645
Corneal equivalent power (D)	43.87 ± 1.16	44.01 ± 1.27	0.680
Corneal apical power (D)	43.94 ± 1.19	44.08 ± 1.32	0.696
Corneal toricity (D)	1.85 ± 0.31	1.81 ± 0.32	0.611
Corneal J180 (D)	−0.89 ± 0.16	−0.84 ± 0.17	0.286
Corneal J45 (D)	0.09 ± 0.24	0.05 ± 0.33	0.977

UCVA : uncorrected visual acuity; Corneal J180 = −C cos 2θ/2; BCVA: best-corrected visual acuity; Corneal J45 = −C sin 2θ/2 (C: corneal astigmatism power, θ: corneal astigmatism axis).