Trials / Completed
CompletedNCT05017376
Evaluating the Effect of Optical Zones on Correction for SMILE: Vector Analysis
Evaluating the Effect of Optical Zones on Myopia and Astigmatism Correction in SMILE: Vector Analysis
- Status
- Completed
- Phase
- —
- Study type
- Observational
- Enrollment
- 140 (actual)
- Sponsor
- Tianjin Eye Hospital · Academic / Other
- Sex
- All
- Age
- 18 Years – 45 Years
- Healthy volunteers
- Not accepted
Summary
Evaluate the effect of the size of optical zones (OZ) on myopia and astigmatism correction in small incision lenticular extraction.
Detailed description
To retrospectively study whether different surgical optical zone sizes affect the correction of diopter and astigmatism in myopia patients. Divided into 2 groups according to the diameter of the optical zone. The vector analysis method was used to analyze the changes and errors of astigmatism in TR and SIR after operation. Generalized Estimation Equation (GEE) model is used for multiple regression analysis to evaluate the potential factors related to the error value.
Conditions
Interventions
| Type | Name | Description |
|---|---|---|
| PROCEDURE | small incision lenticular extraction | In patients with the same degree of myopia, different optical zones were designed for operation |
Timeline
- Start date
- 2020-08-01
- Primary completion
- 2020-12-31
- Completion
- 2021-08-01
- First posted
- 2021-08-23
- Last updated
- 2021-08-23
Locations
1 site across 1 country: China
Source: ClinicalTrials.gov record NCT05017376. Inclusion in this directory is not an endorsement.