- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00317525
Effects of Different Add Powers on the Comfort and Productivity of Computer Users With Fixed or Free Head Movement
September 7, 2006 updated by: American Optometric Association
The aim of this study is to examine the relationship between optical blur from poor refractive corrections (glasses) of older workers using computers and their productivity and comfort in the workplace.
The investigators believe that improving the visual status of subjects who use computers will have a beneficial effect on productivity and visual comfort.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
The aim of this study is to examine the relationship between optical blur from poor refractive corrections (glasses) of older workers using computers and their productivity and comfort in the workplace.
We believe that improving the visual status of subjects who use computers will have a beneficial effect on productivity and visual comfort.
All subjects will be required to complete a vision screening at no charge to decide if they qualify for the study.
This is a double-blind study, which means that neither the subject nor the doctors will know which pair of lenses you will be wearing during the parts of the study.
Subjects will complete a total of 4 hours of testing.
The total amount of testing will be divided into ten 15-minute periods.
During each period, the investigator will place different lenses in a trial frame.
The trial frame that the subject will wear during the experiment will have their prescription for near plus an unknown pair of lenses.
During the testing, the subject will complete a task involving finding and deleting apostrophes from a manuscript on a standard computer.
Either the investigator or co-investigator will explain how to do this simple task.
Subjects will answer a short survey before and after these tasks to check on symptoms resulting from using the computer.
The following periodic measurements will be made during the study: productivity and accuracy to search for apostrophes (') in a document on one of the states of the U.S.
These tasks will require a total of 4 hours testing with a total of ten pairs of trial lenses during a single visit.
Study Type
Interventional
Enrollment
36
Phase
- Phase 3
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Alabama
-
Birmingham, Alabama, United States, 35294-0010
- School of Optometry
-
-
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
40 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- 40 years of age or greater
- 20/40 visual acuity or better in each eye
- Use a computer at least 1 hour per work day
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: Treatment
- Allocation: Randomized
- Interventional Model: Factorial Assignment
- Masking: Double
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
---|
Visual comfort
|
Productivity (correct words per hour)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Kent M Daum, O.D., Ph.D., School of Optometry, University of Alabama at Birmingham
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
May 1, 2005
Study Completion
June 1, 2006
Study Registration Dates
First Submitted
April 21, 2006
First Submitted That Met QC Criteria
April 21, 2006
First Posted (Estimate)
April 25, 2006
Study Record Updates
Last Update Posted (Estimate)
September 11, 2006
Last Update Submitted That Met QC Criteria
September 7, 2006
Last Verified
May 1, 2005
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- X050314015
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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