A prospective, multicenter, randomized, open, parallel positive controlled clinical study to evaluate the safety and efficacy of scleral contact lenses for correcting ametropia

INTERVENTION: Experimental group:Scleral contact lens;Control group:Rigid air permeable contact lens; CONDITION: ametropia PRIMARY OUTCOME: Percentage of patients with corrected visual acuity 5.0 (5 point visual acuity) (minor visual acuity 1.0) in both eyes after 1 week of wearing glasses; SECONDARY OUTCOME: Contact lens corrects vision;Contact lens best corrects vision;Subjective acceptability assessment; INCLUSION CRITERIA: (1) Aged between 18 and 65 (including 18 and 65); (2) Both eyes were within ‐20.00D +20.00D; (3) Able and willing to comply with all treatment and follow‐up; (4) Be able to understand the purpose of the experiment, participate voluntarily and have informed consent signed by the subject himself or his legal guardian.