Keratoconus, Stable
Conditions
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.
Interventions
OTHERPentacam and Corvis ST
morphological and biomechanical parameters of corneal were obtain by Pentacam and Corvis ST
Sponsors
Tianjin Eye Hospital
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
Yes
Inclusion criteria
1. Best corrected visual acuity (BCVA) ≥ 20/20; 2. No other eye diseases except myopia and astigmatism; 3. The cornea was transparent, and there was no cloud or pannus; 4. No clinical manifestation of keratoconus（Corneal stromal thinning, Cone-shaped anterior protrusions, Fleischers ring, Vogts striae, Epithelial or subepithelial scarring）
Exclusion criteria
1) corneal disease; 2\) 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;
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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. |
Countries
China
Outcome results
None listed