Application of Phototherapeutic Keratectomy Mode to Mark the Axis of Astigmatism

Not Applicable

Recruiting

• Conditions: Astigmatism

• Registration Number: NCT06694051
• Lead Sponsor: Tianjin Eye Hospital

Brief Summary

Corneal refractive surgery is an effective way to correct refractive error. Modern corneal refractive surgery for the correction of myopia or hyperopia can achieve or close to the expected goal, but to eliminate astigmatism is always one of the major problems of corneal refractive surgery. The key point in the correction of astigmatism is that as a vector parameter, astigmatism has both magnitude and direction. The angle error may be caused by the rotation of the patient's head position and the involuntary rotation of eyes. Phototherapeutic keratectomy can precisely cut the corneal tissue, and is often used in clinic to remove corneal scars or repair corneal surface morphology. In this study, the excimer laser therapeutic keratectomy mode was used to achieve accurate marking of the axis of astigmatism by setting the treatment laser parameters. With the help of the static cyclotorsion of the eye, the precise treatment of astigmatism could realize.

Detailed Description

Not available

Study Timeline

• Study Start: 2024-10-01
• Status Verified: 2024-11
• Study First Submitted: 2024-11-15
• Study First Submitted QC: 2024-11-15
• Last Update Submitted: 2024-11-15
• Study First Posted: 2024-11-19
• Last Update Posted: 2024-11-19
• Primary Completion: 2025-12-31
• Study Completion: 2025-12-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• at least 18 years old

Exclusion Criteria

• ocular disease

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
refraction	3 months

Trial Locations

Locations (1)

Tianjin Eye Hospital; 🇨🇳 Tianjin, Tianjin, China