Comparison of cross-cylinder and single method of photorefractive keratectomy in correcting medium-high astigmatism
Not Applicable
- Conditions
- Medium-high astigmatism.Astigmatism
- Registration Number
- IRCT201107103827N3
- Lead Sponsor
- Tabriz University of Medical Sciences
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete
- Sex
- All
- Target Recruitment
- 50
Inclusion Criteria
age more than 20 years, refractive stability for at least one year and regular and symmetric astigmatism more than 1.50 diopters
Exclusion criteria: corneal thickness less than 480 micron, keratoconus or suspected keratoconus, active ocular disease and systemic collagen disease
Exclusion Criteria
Not provided
Study & Design
- Study Type
- interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Correction of astigmatism. Timepoint: Preoperative and six months postoperative. Method of measurement: Refraction.
- Secondary Outcome Measures
Name Time Method Visual acuity. Timepoint: Preoperative and six months postoperative. Method of measurement: Snellen chart.;Visual aberrations. Timepoint: Preoperative and six months postoperative. Method of measurement: Aberrometry.