Blurring the line: measuring how astigmatism impacts vision after cataract surgery
NCT ID NCT06784063
First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time
Summary
This study looks at how residual astigmatism affects vision in people who have already received the Clareon Vivity extended vision intraocular lens (IOL) during cataract surgery. Researchers will temporarily induce astigmatism using trial lenses and measure changes in distance, intermediate, and near visual acuity. The goal is to quantify the impact of astigmatism on visual performance with this specific IOL.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Clareon Vivity Extended Vision Intraocular Lens (IOL)
- What this could lead to
- If successful, this study could help eye surgeons understand how much astigmatism can be left uncorrected without harming visual performance after cataract surgery with this lens.
- What could go wrong
- This is a small, observational study with only 40 participants. It measures vision under artificial astigmatism in a lab setting, which may not reflect real-world conditions or long-term outcomes.
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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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Berkeley Eye Center
Sugar Land, Texas, 77478, United States
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Grosinger, Spigelman & Grey Eye Surgeons, P.C
Bloomfield Hills, Michigan, 48302, United States
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Key-Whitman Eye Center
Dallas, Texas, 75243, United States
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