# Healthy Volunteer Study of Sildenafil Effects Upon Vision

> **NCT00251784** · PHASE4 · COMPLETED · sponsor: **University of Cambridge**

## Conditions studied

- Blindness

## Interventions

- **DRUG:** Sildenafil

## Key facts

- **NCT ID:** NCT00251784
- **Lead sponsor:** University of Cambridge
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2002-02
- **Primary completion:** —
- **Final completion:** 2003-06
- **Target enrollment:** — (—)
- **Last updated:** 2005-11-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00251784

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00251784, "Healthy Volunteer Study of Sildenafil Effects Upon Vision". Retrieved via AI Analytics 2026-06-26 from https://api.ai-analytics.org/clinical/NCT00251784. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*