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Epidemiological investigation of the Charles Bonnet Syndrome

Epidemiological investigation of the Charles Bonnet Syndrome

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00021065
Enrollment
50
Registered
2021-01-05
Start date
2018-01-02
Completion date
Unknown
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

R44.1

Interventions

Group 1: Patients with Charles Bonet syndrome. During the study, the necessary examinations are performed during the consultation hours for magnifying vision devices, according to the following schem

Sponsors

Knappschaftsklinikum Saar
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: The study will include patients who present themselves during consultation hours for magnifying vision aids. A written declaration of consent must be submitted. Minimum age: 18 years.

Exclusion criteria

Exclusion criteria: Patients with other diseases or drugs that can cause visual hallucinations.

Design outcomes

Primary

MeasureTime frame
Visual acuity determination with best corrected refraction, Completed questionnaire regarding: Age of the patient, current visual acuity, existing eye diseases, general diagnoses, presence of visual hallucinations, presence of hallucinations of other senses, insight into the unreality of the hallucinations, detailed questioning about the hallucinations regarding type, duration, appearance, frequency, triggering feelings as well as the previous handling of the phenomenon.

Countries

Germany

Contacts

Public ContactAndré Schulz

Knappschaftsklinikum Saar, Augenklinik Sulzbach

andre.schulz@kksaar.de06897 574 3001

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Apr 4, 2026