Effects of Different Add Powers on the Comfort and Productivity of Computer Users With Fixed or Free Head Movement
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ClinicalTrials.gov Identifier: NCT00317525 |
Recruitment Status
:
Completed
First Posted
: April 25, 2006
Last Update Posted
: September 11, 2006
|
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Refractive Errors Asthenopia | Device: Spectacle Lenses | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Enrollment : | 36 participants |
Allocation: | Randomized |
Intervention Model: | Factorial Assignment |
Masking: | Double |
Primary Purpose: | Treatment |
Official Title: | Effects of Different Add Powers on the Comfort and Productivity of Computer Users With Fixed or Free Head Movement |
Study Start Date : | May 2005 |
Study Completion Date : | June 2006 |

- Visual comfort
- Productivity (correct words per hour)

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Ages Eligible for Study: | 40 Years and older (Adult, Senior) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
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

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00317525
United States, Alabama | |
School of Optometry | |
Birmingham, Alabama, United States, 35294-0010 |
Principal Investigator: | Kent M Daum, O.D., Ph.D. | School of Optometry, University of Alabama at Birmingham |
ClinicalTrials.gov Identifier: | NCT00317525 History of Changes |
Other Study ID Numbers: |
X050314015 |
First Posted: | April 25, 2006 Key Record Dates |
Last Update Posted: | September 11, 2006 |
Last Verified: | May 2005 |
Keywords provided by American Optometric Association:
Refractive error Asthenopia |
Additional relevant MeSH terms:
Refractive Errors Asthenopia Eye Diseases |