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

Completed · Phase 4

Conditions studied: Myopia, Astigmatism

In brief

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.

Key facts

Study ID

NCT01454843

Run by

Stanford University

People needed

60

Starts

2009-04-01

Expected to finish

2012-06-23

Last updated by the study team

2022-04-11

Who can join

Age: 21 and older, up to 60. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• 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.

You may not qualify if…

• 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.

Where it is running

• Byers Eye Institute at Stanford — Palo Alto, California, United States

Full record on ClinicalTrials.gov

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