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A comparative study of the corneal asphericity and the elevation of the posterior corneal surface after FS-LASIK and SMART

A comparative study of the corneal asphericity and the elevation of the posterior corneal surface after FS-LASIK and SMART

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2100045632
Enrollment
Unknown
Registered
2021-04-20
Start date
2021-04-20
Completion date
Unknown
Last updated
2021-12-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Refractive errors

Interventions

Sponsors

Tianjin Medical University Eye Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 40 Years

Inclusion criteria

Inclusion criteria: 1. Aged >= 18 years; 2. The refractive power is basically stable for>=2 years (the increase in the refractive power of myopia does not exceed 0.50 D per year); 3. Before surgery, stop wearing soft contact lenses for at least 2 weeks, and stop wearing rigid contact lenses for at least 4 weeks, with normal corrected vision; 4. Spherical power = 1.0.

Exclusion criteria

Exclusion criteria: 1. There is active inflammation in the eye, suppuration around the eye, and serious ocular adnexal disease; 2. With glaucoma, keratoconus, systemic connective tissue diseases; 3. With mental illness, diabetes, systemic infectious diseases or autoimmune diseases, etc..

Design outcomes

Primary

MeasureTime frame
Q value;Corneal high order aberrationsaberration;

Secondary

MeasureTime frame
Posterior surface elevation of the cornea;

Countries

China

Contacts

Public ContactHuang Yue

Tianjin Medical University Eye Hospital

1097813271@qq.com+86 15620662542

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026