Tomographic Analysis of Anterior, Posterior, Total Corneal Refractive Power Changes After Laser-assisted Keratotomy
- Conditions
- Corneal Astigmatism
- Registration Number
- NCT03097302
- Lead Sponsor
- University Clinic Frankfurt
- Brief Summary
To analyze the effect of femtolaser-assisted keratotomy on corneal astigmatism (anterior, posterior and Total corneal refractive power) measured by Scheimpflug tomography after laser lens surgery.
- Detailed Description
This study investigated patients' eyes with low to moderate total corneal refractive power determined with Scheimpflug tomography (Pentacam HR) after penetrating femtosecond laser-assisted keratotomy (pFLAK) and laser lens surgery. The anterior corneal astigmatism, posterior corneal astigmatism and total corneal refractive power were determined before, 1 month and 3 months after lens surgery. Vector analysis according to the Alpins' method was used to calculate surgically induced astigmatism (SIA).
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 23
- Patients who received penetrating femtosecond laser-assisted lens surgery with low to moderate corneal astigmatism
- Eyes with irregular corneal astigmatism such as keratoconus, previous corneal surgery, acute or chronic ophthalmic diseases of the anterior segment and intraoperative complications were not included in this study.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Change from Baseline Total corneal refractive power at 3 months Before and 3 months after lens surgery Total corneal astigmatism (anterior and posterior astigmatism)
- Secondary Outcome Measures
Name Time Method Change from Baseline Posterior corneal astigmatism at 3 months Before and 3 months after lens surgery Posterior corneal astigmatism
Change from Baseline Anterior corneal astigmatism at 3 months Before and 3 months after lens surgery Anterior corneal astigmatism