Corneal Biomechanical Measurements to Guide Refractive Surgery

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The trial evaluates the accuracy of corneal Young's modulus measurements (E_CID and E_Steady-State) taken by a steady-state corneal biomechanical device in patients scheduled for refractive surgery. Measurements will be compared with standard corneal assessment tools, including Pentacam and Corvis ST. The goal is to determine if these biomechanical properties can inform surgical decisions and potentially improve outcomes. Recruitment is limited to adults with myopia or myopic astigmatism and otherwise healthy corneas, excluding those with prior ocular disease or surgery. This is an interventional feasibility assessment conducted at Tianjin Eye Hospital.

Why it matters

Who can join: the full rules

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;

Exclusion Criteria:

1. Corneal disease;
2. Ocular trauma;
3. Previous ocular surgery;
4. Any anterior segment diseases except cataract;
5. 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;
6. Pregnant and lactating women;

Where it's running

• Tianjin Eye Hospital
  Tianjin, Tianjin Municipality, China Recruiting

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.