Trial Search Results

LASIK Using the Alcon Allegretto Wavefront-Guided Excimer Laser vs AMO Visx Wavefront-Guided Excimer Laser

The purpose of the study is to compare the results of LASIK surgery when using Alcon Allegretto wavefront-guided excimer laser system compared to AMO Visx Custom wavefront-guided excimer laser system in patients with nearsightedness with and without astigmatism.

Stanford is currently not accepting patients for this trial.

Lead Sponsor:

Stanford University

Stanford Investigator(s):


  • Procedure: Wavefront-guided LASIK - Allegretto
  • Procedure: Wavefront-guided LASIK - AMO


Phase 4


Inclusion Criteria:

   - Subjects age 21 and older with healthy eyes.

   - Nearsightedness between -0.50 diopters and -7.00 diopters with or without astigmatism
   of up to 3.50 diopters.

Exclusion Criteria:

   - Subjects under the age of 21.

   - Patients with excessively thin corneas.

   - Patients with topographic evidence of keratoconus.

   - Patients with ectatic eye disorders.

   - Patients with autoimmune diseases.

   - Patients who are pregnant or nursing.

   - Patients must have similar levels of nearsightedness with or without astigmatism in
   each eye.

   - They can not be more than 1.5 diopters of difference between eyes.

   - Patients must have similar levels of astigmatism in each eye.

   - They can not have more than 1.5 diopters of difference in nearsightedness or
   astigmatism between their two eyes.

Ages Eligible for Study

21 Years - 60 Years

Genders Eligible for Study


Not currently accepting new patients for this trial

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
Not Recruiting