LASIK showdown: which eye surgery gives sharper sight?
NCT ID NCT07078799
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two LASIK techniques to see which one corrects nearsightedness and astigmatism better. 70 adults aged 22 and older with healthy eyes will have one eye treated with each method. The goal is to find out if one approach leads to sharper vision without glasses.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 70 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2026
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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22 to 59 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
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 autoimmune diseases. 6. Subjects who are pregnant or nursing at the time of surgery. (The FDA-approved labelling indications for LASIK specifically excludes patients who are pregnant or nursing. There is no strict prohibition not to become pregnant during the one year study period) 7. They can not be more than 1.5 diopter of difference between eyes. 8. Subjects with more than 3.00 diopters of astigmatism 9. Subjects with disimilar levels of astigmatism in each eye (They can not have more than 0.75 diopters of difference between eyes) -
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Byers Eye Institute at Stanford University School of Medicine
RECRUITINGPalo Alto, California, 94303, United States
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