Cataract lens color may influence sleep quality
NCT ID NCT02304900
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study looked at 400 people aged 60-90 who had cataract surgery. They received either a white or yellow artificial lens. Researchers wanted to see if the color of the lens affected sleep time, sleep quality, and mood two months after surgery. The idea is that blue light filtering (yellow lens) might change the body's internal clock.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
intraocular lens implant (white or yellow)
What this could lead to
If it works, this could help surgeons choose an implant color that improves sleep and mood after cataract surgery.
What could go wrong
This is a completed study with no phase designation, so results may not be conclusive. The effect of lens color on sleep is still uncertain and may vary by individual.
Disclaimer
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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.
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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Service d'Ophtalmologie
Brest, France
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Service d'Ophtalmologie
Tours, 37, France
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Service d'Ophtalmologie, Centre Hospitalier Paul Martinais
Loches, 37600, France