Myopia or myopic astigmatism
Conditions
Interventions
High-Level compensation group:Apply high compensation to the Kappa angle.
Low-Level compensation group:Apply low 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. Age range: 18 - 40 years old. Patients with stable refractive status for >= 1 year, having myopia or myopic astigmatism, with refractive power within the range of SMILE procedure; 2. Normal corneal morphology and corneal thickness meeting the surgical requirements; 3. Best corrected visual acuity (CDVA) before surgery >= 1.0; 4. The kappa angle-related offset coordinates (x, y) obtained before surgery, with the absolute value of either |x| or |yl| of any eye >= 0.20mm; 5. Voluntary to undergo SMILE surgery on the VISUMAX800 platform, understanding the random grouping scheme and signing the informed consent form.
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 |
|---|---|
| Visual Acuity;Quality of Vision (QoV) Questionnaire;Contrast Sensitivity;Corneal Topography;Refraction and Refractive Outcome; | — |
Countries
China
Contacts
Public ContactGuofu Huang
The Zhongshan Ophthalmic Center,Sun Yat-sen University
Outcome results
None listed