Healthy Volunteer Study of Sildenafil Effects Upon Vision

November 9, 2005 updated by: University of Cambridge

A Double-Blind, Randomised, Placebo Controlled Healthy Volunteer Study to Investigate the Nature and Origin of the Disturbance of Vision Induced by Single Oral Doses of Sildenafil

Patients sometimes report subjective visual effects when taking sildenafil. Our study set out to measure these in a controlled setting. Subjects were asked to detect patterns presented on a monitor screen.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Phase

  • Phase 4

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria: male -

Exclusion Criteria:

-

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Educational/Counseling/Training
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Cambridge

Investigators

  • Principal Investigator: Morris J Brown, MD, University of Cambridge
  • Study Director: John Mollon, FRS, University of Cambridge

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2002

Study Completion

June 1, 2003

Study Registration Dates

First Submitted

November 9, 2005

First Submitted That Met QC Criteria

November 9, 2005

First Posted (Estimate)

November 10, 2005

Study Record Updates

Last Update Posted (Estimate)

November 10, 2005

Last Update Submitted That Met QC Criteria

November 9, 2005

Last Verified

December 1, 2003

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • LREC 98/297

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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