None
Conditions
Interventions
MYO 200 trial group:Optical instrument: MYO 200
IOLMaster 500 control group:Optical instrument: IOLMaster 500
SW-9000 Plus control group:Optical instrument: Optical instrument: SW-9000 Plus
Sponsors
Fudan University Affiliated Eye, Ear, Nose and Throat Hospital
Eligibility
Sex/Gender
All
Age
8 Years to 40 Years
Inclusion criteria
Inclusion criteria: 1. Age 8-40 years, male or female 2. Equivalent spherical lens power between +5.00D and -15.00D 3. Astigmatism <= 6.00D 4. Consent to participate in the study and signed Informed consent form
Exclusion criteria
Exclusion criteria: 1. History of trauma or undergone ophthalmic surgery in the measured eye within 6 months prior to the study 2. History of focusing ability defects such as nystagmus and strabismus in the measurement eye, and cannot fix by fixation 3. Cornea of the measured eye is partially or completely covered due to palpebral fissure closure or stenosis, and cannot be measured 4. Previous macular edema, retinal detachment, corneal leukoplakia, thick cataract, posterior subcapsular opacity, or intravitreal hemorrhage and other diseases that affect the results of axial measurement; 5. With pseudophak, prosthetic eye or other ocular structural abnormalities installed in the measured eye; 6. Have recently worn orthokeratology lenses and other contact lenses 7. History of cycloplegic refractive state prior to examination 8. Inability to sit upright in front of the device, or inability to rest their head on their forehead or jaw rest, that due to unable to cooperate with the measurement process 9. Have a severe systemic disease assessed by investigators that is not suitable for participation in this study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Axial length;Anterior corneal surface curvature; | — |
Secondary
| Measure | Time frame |
|---|---|
| Time is measured monoccularly; | — |
Countries
China
Contacts
Public ContactChen Zhi
Fudan University Affiliated Eye, Ear, Nose and Throat Hospital
Outcome results
None listed