Comparison of Toric and Spherical Orthokeratology Lenses in Patients with Astigmatism

Figure 2

Orthokeratology lens decentration (a) and its horizontal (b) and vertical (c) vectors at all visits over 12 months. The upper and lower error bars represent the SDs for the spherical and toric groups, respectively. indicates a statistically significant difference between the two groups.

(a)

(b)

(c)