Why do some blind people see things that Aren't there? new study aims to find out

NCT ID NCT07563101

ENROLLING_BY_INVITATION Knowledge-focused Sponsor: Fondazione Policlinico Universitario Agostino Gemelli IRCCS Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how common Charles Bonnet Syndrome (CBS) is in people with vision loss from conditions like macular degeneration or glaucoma. CBS causes complex visual hallucinations without mental illness. Researchers will survey 640 participants to measure how often it happens and how it affects anxiety, mood, and quality of life. No treatment is given; the goal is to better understand and identify the condition.

What this could mean

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

What this could lead to: If successful, this study could improve how doctors identify and support patients with Charles Bonnet Syndrome, reducing fear and isolation.
What could go wrong: This is an observational study, not a treatment trial. It will not test any therapy, so it cannot directly improve symptoms.

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.

age-related macular degeneration Charles bonnet syndrome glaucoma Stargardt disease

As listed by the trial registrant

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

CHARLES BONNET SYNDROME

Contacts and locations

Locations

fondazione Policlinico Universitario A. Gemelli IRCCS, Polo Nazionale Ipovisione

Roma, 00168, Italy

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