Eye drop showdown: which artificial tear sharpens vision best?
NCT ID NCT06784661
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested two artificial tear formulations in 40 healthy adults aged 18-35. One type contains lipids (mineral oil and hydroxypropyl guar) to mimic natural tears, while the other is a simpler non-lipid drop. Researchers measured changes in corneal aberrations (tiny imperfections affecting vision) before and 15 minutes after a single drop in each eye. The goal is to see which formulation better stabilizes the tear film and improves optical quality.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
artificial tears (lipid-based: mineral oil and hydroxypropyl guar; non-lipid: hydroxypropyl guar)
What this could lead to
If it works, this could help eye doctors choose the best artificial tear type for improving vision quality in people with dry eyes.
What could go wrong
This is a small, completed study in healthy people, not patients. The effects are measured only 15 minutes after a single drop, so long-term benefits are unknown.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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.
Contacts and locations
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Locations
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ISEC Lisboa
Lisbon, Portugal