Evaluation of Morphology Abnormal Cornea Stability With Corneal Biomechanical
Completed
- Conditions
- Keratoconus, Stable
- Interventions
- Other: Pentacam and Corvis ST
- Registration Number
- NCT05748002
- Lead Sponsor
- Tianjin Eye Hospital
- Brief Summary
To evaluate the corneal biomechanical properties of stable eyes with abnormal morphology, and introduce a biomechanical stable index to evaluate the stability of the eyes with abnormal morphology at the first diagnosis.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 315
Inclusion Criteria
- Best corrected visual acuity (BCVA) ≥ 20/20;
- No other eye diseases except myopia and astigmatism;
- The cornea was transparent, and there was no cloud or pannus;
- No clinical manifestation of keratoconus（Corneal stromal thinning, Cone-shaped anterior protrusions, Fleischers ring, Vogts striae, Epithelial or subepithelial scarring）
Exclusion Criteria
-
corneal disease;
-
ocular trauma; 3) Patients were required to stop wearing soft contact lenses for at least 2 weeks and rigid contact lenses for at least 4 weeks before examination; 4) Pregnant and lactating women;
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description stable group Pentacam and Corvis ST - subclinical keratoconus Pentacam and Corvis ST - normal group Pentacam and Corvis ST - follow up group Pentacam and Corvis ST -
- Primary Outcome Measures
Name Time Method stable one year No alterations in morphological(Pentacam parameters, BAD\<0.42, TCT\<10μm) and biomechanical(Corvis ST, parametersCBI\<0.2, SPA1\<10) parameters between the first and last follow-up.
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Tiajin Eye Hospital
🇨🇳Tianjin, Tianjin, China