myopia
Conditions
Interventions
1:contact lens2
2:contact lens2
Sponsors
Beijing Tongren Hospital, Capital Medical University
Eligibility
Sex/Gender
All
Age
8 Years to 40 Years
Inclusion criteria
Inclusion criteria: 1) patients aged between 8 and 40 years of myopia, including 8 and 40 years old 2) myopia is 4.00D or lower; 3) astigmatism with the rule is lower than 1.75d, and the astigmatism against the rule is lower than 1.00 D; 4) the best correction of visual acuity is not less than 20/20 ; 5) patients with corneal curvature at 40.00D ~ 46.00 D; 6) diopter stay stability before trial; 7) be able to complete at least 1 year follow-up, and wear contact lens for 8-10 hours per day; 8) patients who had not worn hard contact lenses (including corneal plastic lenses) in the past 2 months; 9) no clinical trial of other drugs or medical devices during the first 30 days of screening; 10) be able to understand the purpose of the experiment, volunteer to participate and sign the informed consent form by the patient himself or his legal guardian.
Exclusion criteria
Exclusion criteria: 1) with systemic disease cause low immunity, or an disease have effect on corneal shape of patients (such as acute and chronic sinusitis, diabetes and down syndrome, rheumatoid arthritis, psychiatric patients, etc.); 2) corneal abnomal; Has corneal surgery, or has a history of corneal trauma; Patients with hypocorneal sensory impairment (e.g. corneal infection, etc.); Having a history of ocular trauma or intraocular surgery; Patients with fundus lesions and other ocular organic diseases; 3) combined with other ocular diseases, such as dacryocystitis, xerophthalmia, conjunctivitis, blepharitis, etc. 4) pregnant, lactating or recently planned pregnancies; 5) patients who are using or need to use drugs that may cause dry eyes or affect visual and corneal curvature; 6) patients who are allergic to contact lens or contact lens care solution; 7) pupil diameter is greater than 6.2 mm; 8) the researchers judged that the patients were not suitable of other situations.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| visual acurity; | — |
Countries
China
Contacts
Public ContactFu Jing
Beijing Tongren Hospital, Capital Medical University
Outcome results
None listed