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.
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.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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ISEC Lisboa
Lisbon, Portugal