A Prospective Randomized Comparison of Wavefront-guided LASIK Surgery to Ray Tracing-Guided LASIK Surgery
Stanford University
Summary
We are enrolling participants aged 22 and older to have LASIK surgery in both eyes. We will perform wavefront-guided LASIK in one eye and ray tracing-guided LASIK in the fellow eye of each participant. We are trying to see if there are any differences in the efficacy between the two types of LASIK procedures.
Description
We are comparing the outcomes of wavefront-guided LASIK (laser in-situ keratomileusis) and ray tracing-guided LASIK for nearsightedness with and without astigmatism. Wavefront aberrometry (a non-contact laser measuring device) is an automated device that measures the refractive status of the eye. This data is then transferred to the laser system and calculates a unique treatment to reduce or eliminate your nearsightedness with and without astigmatism (a non-spherical shape). One eye will be treated with ray tracing-guided LASIK and the other eye treated with the wavefront-guided LASIK. Each…
Eligibility
- Age range
- 22–59 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: 1. Age 22 and older 2. People with healthy eyes: 1. No abnormal corneal shape 2. No excessively thin corneas 3. No eye diseases such as glaucoma or cataracts 3. Nearsightedness between -1.00 diopters and -10.00 diopters. 4. Subjects with less than or equal to 3.00 diopters of astigmatism. 5. Subjects must have similar levels of nearsightedness in each eye. Exclusion Criteria: 1. Subjects under the age of 22. 2. Subjects with excessively thin corneas. 3. Subjects with topographic evidence of keratoconus. 4. Subjects with ectactic eye disorders. 5. Subjects with…
Interventions
- ProcedureLASIK
Wavefront-guided LASIK is being performed in one eye and Ray-tracing guided LASIK is being performed in the fellow eye
- ProcedureLASIK
Ray-tracing guided LASIK is being performed in one eye and Wavefront-guided LASIK is being performed in the fellow eye.
Location
- Byers Eye Institute at Stanford University School of MedicinePalo Alto, California