Seven orthokeratology patients were studied to determine whether the myopic orthokeratology treatments of 7.0, 6.0, 5.0 mm optical zones would make a significant difference in the outcome of visual acuity, apical radius, and treatment area. It was our hypothesis that the 7.0 mm optical zone would give the best outcome in visual acuity, the biggest change in apical radius and treatment area. Our hypothesis was supported in the two areas above. The 7.0 mm optical zone has the biggest change in the apical radius and treatment area. However, the best visual acuity outcome was seen with the 6.0 mm optical zone orthokeratology lenses.
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