To evaluate induced HOA at the time of OrthoKeratology correction of Myopia in teenagers’ group of patients and possible influence on the Myopia Control (stabilization or slowing the progression). 50 Myopic patients (100 eyes) aged 10-18 years (mean 14.2 ± 2.8) were corrected by Paragon CRT Lenses. Standard ophthalmological examinations including BUVA, BCVA, refraction, U/S Biometry, Corneal Topography, and Aberrometry were done at the beginning (baseline), 1, 3, 6, 12, and 24 months after the beginning of Ortho-K Treatment. Mean initial refraction was Sph: (-)3.71 ± 1.27D, Cyl: (-)0.62D ± 0.41D. Mean HOA (rms) (6.0mm pupil) were 0.346 ± 0.171μμ., Mean Spherical HOA (SA): 0.024 ± 0.011μμ. The mean accommodative reserve of the ciliary muscle was 2.7 ± 1.8 D. All patients finished 24 months of follow-up. After 1 month of therapy all patients got stable refraction (mean: Sph (+) 0.11 ± 0.12D), BUVA 20/20 or better, stable keratometry and corneal topography. None of the patients progressed for more than (-)0.5D/year. Total HOA increased: (mean) to 1.022 ± 0.205μμ, SA - 0.22 ± 0.087μμ. All induced SA were positive. The mean accommodative reserve of the ciliary muscle increased to 6.9 ± 1.4D and became comparable with the age norm. No significant complications occurred at the time of follow-up. Ortho-K treatment is safe and effective in correcting and stabilizing the myopia in teenage group of patients. Myopia control (stabilization) in this group of patients is associated with the increasing strength of ciliary muscle. Positive SA is shifting the best image plain (focus) of the eye towards myopia. At the time of accommodation, the pupil constricts (accommodative miosis). With constricted pupils, the level of HOA (including SA) decreased. The focus is shifted towards hyperopia. The ciliary muscle has to constrict more for the accommodation. This mechanism can be responsible for the increase of ciliary muscle increase strength and Myopia Control.