myopia or myopic astigmatism
Conditions
Interventions
Compensation group:Apply compensation to the Kappa angle.
Non-compensation group:Apply no compensation to the Kappa angle
Sponsors
The Zhongshan Ophthalmic Center,Sun Yat-sen University
Eligibility
Sex/Gender
All
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: 1. Patients aged 18 to 40 years with myopia or myopic astigmatism and stable refraction for >=1 year, whose refractive errors fall within the treatable range of and meet the indications for SMILE surgery. 2. Normal corneal morphology and corneal thickness meeting surgical requirements. 3. Preoperative corrected distance visual acuity (CDVA) >= 1.0. 4. Preoperative synthetic Kappa angle offset measured >= 0.10 mm and < 0.20 mm. 5. Voluntarily agree to undergo SMILE surgery on the VISUMAX 800 platform, understand the randomization scheme, and provide signed informed consent.
Exclusion criteria
Exclusion criteria: 1. History of prior ocular surgery, significant ocular trauma, or presence of corneal or ocular diseases that may affect the safety of refractive surgery. 2. Severe systemic diseases that may affect ocular healing or surgical safety. 3. Females who are pregnant or lactating. 4. Inability to cooperate as required to complete the procedure or follow-up visits.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Total Ocular Aberration; | — |
Secondary
| Measure | Time frame |
|---|---|
| Contrast Sensitivity;Corneal Topography;Quality of Vision (QoV) Questionnaire;Visual Acuity;Refraction and Refractive Outcome; | — |
Countries
China
Contacts
Public ContactGuofu Huang
The Zhongshan Ophthalmic Center,Sun Yat-sen University
Outcome results
None listed