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Observational Study on Refractive Outcomes and Corneal Epithelial Thickness Changes After Phototherapeutic Keratectomy (PTK)

Observational Study on Refractive Outcomes and Corneal Epithelial Thickness Changes After Phototherapeutic Keratectomy (PTK)

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600127640
Enrollment
Unknown
Registered
2026-07-03
Start date
2026-07-06
Completion date
Unknown
Last updated
2026-07-13

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

Conditions

Corneal superficial lesions

Interventions

PTK treatment group:None

Sponsors

Beijing Tongren Hospital, Capital Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. Patients receiving PTK treatment at our center; 2. Age between 18 and 80; 3. Have a clear indication for PTK surgery and have completed standard PTK treatment; 4. Have complete preoperative examination data, including uncorrected or corrected vision, refractive status, and corneal-related tests; 5. Corneal epithelial thickness measurement data is available during pre- and post-operative follow-ups (e.g., anterior segment OCT or other relevant tests); 6. Prospective patients voluntarily participate in this study and sign the informed consent form.

Exclusion criteria

Exclusion criteria: 1. People who have previously undergone corneal refractive surgery or other surgeries that might affect corneal structure; 2. People with other eye conditions that could affect corneal shape or corneal epithelial thickness, such as keratoconus, keratitis, severe dry eye, corneal degeneration, or malnutrition; 3. People with serious eye diseases that affect vision assessment, like severe cataracts, glaucoma, retinal diseases, or optic nerve disorders; 4. People whose pre- or post-operative clinical data is incomplete, making it impossible to obtain the main research indicators; 5. People who did not complete the required follow-ups after surgery or lack key follow-up examination data; 6. Other situations that the researchers believe make someone unsuitable for this study.

Design outcomes

Primary

MeasureTime frame
Corneal morphological parameters;Refractive outcomes;

Secondary

MeasureTime frame
Corneal morphological parameters;

Countries

China

Contacts

Public ContactZang Yunxiao

Beijing Tongren Hospital, Capital Medical University

17610179776@163.com+86 176 1017 9776

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jul 23, 2026