A prospective, multicenter, randomized, open, paralleled, positive controlled, non-inferiority clinical trial for evaluating the efficacy and safety of orthokeratology in myopia correction

INTERVENTION: experimental group:Orthokeratology lenses;Control group:Orthokeratology lenses; CONDITION: Myopia PRIMARY OUTCOME: Visual Acuity;Residual Refraction; SECONDARY OUTCOME: Product efficiency when wearing glasses for 30 days;Naked eye vision;diopter; INCLUSION CRITERIA: 1.Age greater than or equal to 8 years old and any gender; 2.In the subjective refraction examination, the degree of myopia of the subjects in both eyes is within ‐4.00D (including ‐4.00D) and the degree of astigmatism is within 1.50D (including 1.50D); 3.Able to complete 12‐month follow‐up 4.Able to understand the purpose of the trial voluntarily and signed the informed consent form by himself or his legal guardian