NCT01771757

Completed

Measurement of Retinal Venous Pressure Under Short-term Low-...

University Hospital, Basel, Switzerland Source

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Other study identifiers

Sponsor study identifier

USB-2011-327

Study Type

observational

Actual enrollment (reported)

24

Locations

1 country

Sites

1

Timeline

Study Start

December 2011

Date type not reported

This date has not been verified as actual or estimated.

Primary Completion

May 2014

Actual (reported)

Study Completion

July 2014

Actual (reported)

Brief Summary

The hypothesis is that the pressure in the retinal veins increases under a short-term lack of oxygen and leads to a decreased blood circulation. On the basis of measurements in the hypobaric chamber this hypothesis should be verified.

Registry Overview

Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.

Recruitment status: completed
Actual enrollment (reported): 24 participants
Study completion date: July 2014
Actual (reported)
Listed locations: 1 countries · 1 sites

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.

Study Start
December 2011
Date type not reported
This date has not been verified as actual or estimated.
First Submitted
October 24, 2012
Actual (reported)
First Posted
January 18, 2013
Actual (reported)
Primary Completion
May 2014
Actual (reported)
Study Completion
July 2014
Actual (reported)

Last Updated: July 21, 2014
Status Verified: July 2014
Last Update Submitted: July 18, 2014

Conditions

Healthy

Keywords

retinal venous pressurereduced ambient pressureoxygen partial pressureshort-term hypoxic changes

Outcome Measures

Primary Outcomes (1)

Retinal venous pressure
Quantify the changes in the retinal venous pressure (RVP)
1 hour

Eligibility Criteria

Age18 Years - 60 Years

Sexall

Healthy VolunteersYes

Age GroupsAdult (18-64)

Sampling MethodNon-Probability Sample

Study Population

healthy volunteers

You may qualify if:

healthy

You may not qualify if:

Sponsors & Collaborators

University Hospital, Basel, Switzerland
Otherlead

Study Sites (1)

University of Basel, Dept. of Ophthalmology

Basel, 4031, Switzerland

Study Officials

Josef Flammer, MD
University of Basel, Dept. of Ophthalmology
STUDY DIRECTOR

Enrollment

24 participants (actual enrollment reported by the registry).

Study Design

Study Type: observational
Observational Model: COHORT
Time Perspective: PROSPECTIVE
Sponsor Type: OTHER
Responsible Party: SPONSOR

Study Record Dates

First Submitted

October 24, 2012

First Posted

January 18, 2013

Study Start

December 2011

Date type not reported

This date has not been verified as actual or estimated.

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Recruiting

eye diseases
systemic diseases
term medication (except contraceptives)
pregnancy
allergies to the ingredients Alcain, Tropicamide and Phenylephrine
blood pressure levels except standard (\<60 /\> 140 mmHg)
oxygen saturation (SO2) \<90%

Contact the study team to confirm eligibility.

Primary Completion

May 2014

Actual (reported)

Study Completion

July 2014

Actual (reported)

Last Updated

July 21, 2014

Record last verified: 2014-07

Source record

Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.

Source: ClinicalTrials.gov.

JSON downloads include source attribution and retrieval details alongside the unchanged original record or the separately normalized values.

Registry identifier: NCT01771757
Data provider: ClinicalTrials.gov
Source updated: 2014-07-21
Normalization version: ctgov-legacy-1

Open registry record

Source retrieved: 2026-10-25 22:28:51 UTC

Locations

CH(1)

Brief Summary

Registry Overview

Trial Relationships

Related Scientific Literature

Study Timeline

Study Start

First Submitted

First Posted

Primary Completion

Study Completion

Conditions

Keywords

Outcome Measures

Primary Outcomes (1)

Eligibility Criteria

You may qualify if:

You may not qualify if:

Sponsors & Collaborators

Study Sites (1)

Study Officials

Enrollment

Study Design

Study Record Dates

Source record

Locations