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The overnight use of the Ortho-K lens 


Study shows that the overnight use of the OrthoK lens was more effective at inhibiting axial eye growth and myopia progression than daytime wear of a conventional rigid gas-permeable (GP) lens.​

Ortho K là gì, kính ortho-k giá bao nhiêu tiền, hướng dẫn cách đeo hiệu quả  |

For this prospective study, the researchers employed a contralateral-eye crossover design. The 26 children in the study were fitted with an OrthoK lens in one eye for overnight wear and a GP lens in the contralateral eye for daytime wear. This protocol was followed for six months. After a two-week washout period, the lens/eye combination was reversed, and the lenses were worn for an additional six months.

6 điều cần biết về kính Ortho-K ban đêm

GP lens–wearing eyes showed progressive axial length growth throughout the study. After the first six months of lens wear, axial length had increased by 0.04 ± 0.06 mm in the GP eyes but did not change in the OK eyes. In the second six-month period, OK eyes again showed no change in axial length, while axial length increased by 0.09 ± 0.08 mm in the GP eyes.