Evaluation of Morphology Abnormal Cornea Stability With Corneal Biomechanical

Tianjin Eye Hospital

Status: Completed

Conditions: Keratoconus, Stable

Treatments: Other: Pentacam and Corvis ST

Study type: Observational

Funder types: Other

Identifiers

NCT05748002

2023002

Details and patient eligibility

About

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.

Enrollment: 315 patients

Sex: All

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

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;

Trial design

315 participants in 4 patient groups

stable group

Treatment:

Other: Pentacam and Corvis ST

subclinical keratoconus

Treatment:

Other: Pentacam and Corvis ST

normal group

Treatment:

Other: Pentacam and Corvis ST

follow up group

Treatment:

Other: Pentacam and Corvis ST