refractive error
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Aged 18 years to 40 years old, wearing framework glasses mainly who: best correction vision >=0.8, eyes flexor light varies <=2.0D, astigmatism <=3.0D; eye check no activities sexual eye lesions and no fundus lesions: hard through oxygen sexual contact lenses stopped wearing 4 week above, and soft contact lenses stopped wearing 2 week above; patient has took off glasses of strongly requirements; able to participate in the postoperative follow-up. Corneal thickness <=480 um, spherical power conversion measuring residual corneal after LASIK cutting thickness less than 280 ugm, small palpebral fissure, corneal flap on LASIK career concerns and vulnerable to eye trauma (such as athletes or military) in patients with myopia.
Exclusion criteria
Exclusion criteria: Any eye disease, including Keratoconus or suspected history of Keratoconus, previous eye surgery, glaucoma, diabetes and any systemic disease affecting corneal wound healing, collagen vascular diseases, and so on.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The post-operative Visual acuity;The post-operative spherical equivalent;Surgery time-consumin; | — |
Secondary
| Measure | Time frame |
|---|---|
| Corneal topographic change; | — |
Countries
China