# Study of Retinal and Choriocapillary Vascular Changes in Patients Undergoing Tadalafil 20mg for More Than 6 Months

> **NCT04491773** · — · COMPLETED · sponsor: **Federico II University** · enrollment: 54 (actual)

## Conditions studied

- Erectile Dysfunction Following Radical Prostatectomy

## Interventions

- **DRUG:** Tadalafil 20 MG

## Key facts

- **NCT ID:** NCT04491773
- **Lead sponsor:** Federico II University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2019-11-01
- **Primary completion:** 2020-05-25
- **Final completion:** 2020-05-30
- **Target enrollment:** 54 (ACTUAL)
- **Last updated:** 2020-07-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04491773

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04491773, "Study of Retinal and Choriocapillary Vascular Changes in Patients Undergoing Tadalafil 20mg for More Than 6 Months". Retrieved via AI Analytics 2026-06-26 from https://api.ai-analytics.org/clinical/NCT04491773. Licensed CC0.

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