# Natural History Study of Usher Syndrome ( Light4Deaf )

> **NCT04665726** · — · RECRUITING · sponsor: **Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts** · enrollment: 400 (estimated)

## Conditions studied

- Usher Syndromes

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04665726
- **Lead sponsor:** Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2017-06-08
- **Primary completion:** 2022-06-08
- **Final completion:** 2027-06-08
- **Target enrollment:** 400 (ESTIMATED)
- **Last updated:** 2020-12-14

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04665726

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04665726, "Natural History Study of Usher Syndrome ( Light4Deaf )". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04665726. Licensed CC0.

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