Refractive error
Conditions
Interventions
Case series:none
Sponsors
Guangzhou Aier Eye Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: 1. Age between 18 and 35 years; 2. No significant change in refraction within the past year (periodic change within ±0.50 D); 3. Comprehensive refraction spherical equivalent no more than -10.00 D, cylindrical no more than 4.50 D, and target correction to plano; 4. Adequate corneal tissue; 5. Preoperative CDVA >= 20/25; 6. If wearing soft contact lenses before surgery, discontinue use for at least one week; if wearing rigid contact lenses, discontinue use for at least two weeks. After discontinuing contact lens wear, two comprehensive refraction results should be obtained at least one week apart, with the difference no more than 0.50 D, and the patient must sign the relevant informed consent form; 7. The patient is willing and able to comply with the follow-up schedule and relevant examinations;
Exclusion criteria
Exclusion criteria: 1. Past medical history: pterygium, viral keratitis, corneal dystrophy, glaucoma, fundus-related diseases, refractive corneal surgery, intraocular surgery, uncontrolled systemic diseases, and immune-related diseases; 2. Abnormal corneal topography indicating risk of corneal ectasia after photorefractive corneal surgery, such as keratoconus, suspected keratoconus, frustrated keratoconus, and pellucid marginal corneal degeneration; 3. Residual corneal stromal bed thickness <250µm after planned refractive surgery; 4. Preoperative dark pupil <4.5mm; 5. Special populations: such as those who are pregnant or have a mental illness.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual acuity; | — |
Secondary
| Measure | Time frame |
|---|---|
| refraction;axial length;Corneal topography;visual quality;subjective visual quality; | — |
Countries
China
Contacts
Public ContactZheng Wang
Guangzhou Aier Eye Hospital
Outcome results
None listed