Myopia
Conditions
Brief summary
This work aims at the analysis of ocular aberrations induced by wave front optimized ablation profiles WFO using I-Trace aberrometer (Ray -Tracing)
Detailed description
The iTrace (Tracey Technologies, Houston, Tx) is uniquely designed to combine Placido corneal topography with a ray tracing aberrometer to measure quality of vision in a patient. This work aims at the analysis of ocular aberrations induced by wave front optimized ablation profiles WFO using I-Trace aberrometer (Ray -Tracing)
Interventions
DEVICELASIK
All cases were operated upon using Wavelight Allegretto EX-500 excimer laser (Alcon Laboratories, Inc., Fort Worth, TX) with wave front optimized ablation profile WFO. The Moria II microkeratome (Moria, Anthony, France) was used in all cases.
Sponsors
Alexandria University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
A prospective clinical study including 20 eyes of 10 cases undergoing LASIK with wave front optimized ablation profile
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
1. Myopia up to -8.0 D and astigmatism up to -2.0D. 2. Cases above 18 years of age with a stable refraction for at least one year.
Exclusion criteria
1. Keratoconus. 2. Patients with collagen diseases. 3. Previous LASIK or any other refractive surgery. 4. Severe dry eye syndrome.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Evaluation of ocular aberrations | 3 months | 3\. Evaluation of ocular aberrations done using iTrace Visual Functional Analyzer (ray tracing technology) to quantify changes in total higher order aberrations, coma, spherical aberrations, secondary astigmatism and trefoil after LASIK surgery |
| Visual acuity | 3 months | Unaided as well as best corrected visual acuity |
| Manifest refraction | 3 months | Manifest refraction |
Countries
Egypt
Outcome results
None listed