Laser eye surgery showdown: which fix for nearsightedness is better?

NCT ID NCT06477081

Ongoing Disease control Sponsor: Instituto de Oftalmología Fundación Conde de Valenciana Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares two common laser eye surgeries—KLEx and FS-LASIK—for treating nearsightedness and astigmatism. Researchers will follow 80 adults aged 21 and older to see which procedure provides better vision without glasses and has fewer side effects. Both surgeries reshape the cornea, but KLEx does not require creating a flap, which may reduce certain risks.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: laser eye surgery (KLEx or FS-LASIK)
What this could lead to: If successful, this could show that one procedure is safer or more effective for correcting nearsightedness and astigmatism, helping patients and doctors choose the best option.
What could go wrong: This is a small, early-stage comparison study with only 80 participants. Results may not apply to everyone, and both procedures carry standard surgical risks like infection or under-correction.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

astigmatism myopia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ASTIGMATISM MYOPIA MYOPIC ASTIGMATISM

Contacts and locations

Locations

Instituto de Oftalmología Conde de Valenciana

Mexico City, Mexico City, 06800, Mexico

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