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. 2019 Apr 23;4(1):e000237. doi: 10.1136/bmjophth-2018-000237

Table 1.

Baseline demographics of spectacle-wearing and orthokeratology-treated children.

Single-vision spectacles (n=20) Orthokeratology (n=20)
Age (y) 8.7±1.1 9.4±1.0
Sphere (D) −2.03±0.81 −2.36±0.93
Cylinder (D) −0.43±0.42 −0.55±0.48
Spherical equivalent refraction (D) −2.24±0.85 −2.64±1.09