Colour Vision Impairment During Acute Hypobaric Hypoxia
NCT ID: NCT05584813
Last Updated: 2022-10-18
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
54 participants
INTERVENTIONAL
2019-07-01
2022-08-15
Brief Summary
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Detailed Description
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Five different Groups were analysed:
* ground control binocular (n=12, Bi/GC)
* ground control monocular (n=11, Mo/GC)
* 10,000 ft, 60 min, monocular (n=10, Mo/60/10,000)
* 15,000 ft, 15 min, binocular (n=11, Bi/15/15,000)
* 15,000 ft, 60 min, monocular (n=10, Mo/60/15,000)
Conditions
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Study Design
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RANDOMIZED
PARALLEL
* ground control binocular (n=12, Bi/GC)
* ground control monocular (n=11, Mo/GC)
* 10,000 ft, 60 min, monocular (n=10, Mo/60/10,000)
* 15,000 ft, 15 min, binocular (n=11, Bi/15/15,000)
* 15,000 ft, 60 min, monocular (n=10, Mo/60/15,000)
BASIC_SCIENCE
SINGLE
Study Groups
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ground control binocular
Intervention: pressure chamber environment Procedures: Colour vision tests were performed under normoxia with both eyes three times in a row for appropriate comparability to the simulated flight stages pre-peri-post hypoxia in the intervention groups
No interventions assigned to this group
ground control monocular
Intervention: pressure chamber environment Procedures: Colour vision tests were performed under normoxia with one eye at a time three times in a row for appropriate comparability to the simulated flight stages pre-peri-post hypoxia in the intervention groups
No interventions assigned to this group
10,000 ft, 60 min, monocular pre-peri-post
Intervention: Hypoxia equivalent to an altitude of 10.000 ft. for 60 minutes
Procedures: Colour vision tests were performed with one eye at a time, thereby:
* pre intervention with no hypoxia administered
* during intervention with hypoxia equivalent to an altitude of 10.000 ft. for 60 minutes
* post intervention with no hypoxia administered
Hypobaric Hypoxia
The Waggoner Computerized Color Vision Test (WCCVT) and the Waggoner D-15 (WC-D15) were performed by 54 healthy volunteers in a decompression chamber.
15,000 ft, 15 min, binocular
Intervention: Hypoxia equivalent to an altitude of 15.000 ft. for 15 minutes
Procedures: Colour vision tests were performed with both eyes, thereby:
* pre intervention with no hypoxia administered
* during intervention with hypoxia equivalent to an altitude of 15000 ft. for 15 minutes
* post intervention with no hypoxia administered
Hypobaric Hypoxia
The Waggoner Computerized Color Vision Test (WCCVT) and the Waggoner D-15 (WC-D15) were performed by 54 healthy volunteers in a decompression chamber.
15,000 ft, 60 min, monocular
Intervention: Hypoxia equivalent to an altitude of 15.000 ft. for 60 minutes
Procedures: Colour vision tests were performed with one eye at a time, thereby:
* pre intervention with no hypoxia administered
* during intervention with hypoxia equivalent to an altitude of 15.000 ft. for 60 minutes
* post intervention with no hypoxia administered
Hypobaric Hypoxia
The Waggoner Computerized Color Vision Test (WCCVT) and the Waggoner D-15 (WC-D15) were performed by 54 healthy volunteers in a decompression chamber.
Interventions
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Hypobaric Hypoxia
The Waggoner Computerized Color Vision Test (WCCVT) and the Waggoner D-15 (WC-D15) were performed by 54 healthy volunteers in a decompression chamber.
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* pregnant or suffering from cold symptoms
18 Years
ALL
Yes
Sponsors
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Universitätsklinikum Köln
OTHER
Responsible Party
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Principal Investigators
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Jochen Hinkelbein, Prof.
Role: STUDY_CHAIR
University Hospital Cologne
Locations
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University Hospital Cologne
Cologne, North Rhine-Westphalia, Germany
Countries
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Other Identifiers
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DRU-COLOR-KOELN
Identifier Type: -
Identifier Source: org_study_id
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