Table 1. Inclusion and exclusion criteria.

Inclusion criteria	Exclusion criteria
8 to 16 years old (inclusive)	An experience of myopia control
Myopia: -5.00 to -1.00 D	Ocular or systemic disease
Anisometropia: ≤1.00 D	Contraindications for ortho-k lens
Astigmatism: ≥-1.50 D	Poor compliance
BCVA and NVA (logMAR) equal to or better than 0.00

BCVA: Best corrected visual acuity; NVA: Near visual acuity.