- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00818532
Corneal Astigmatism Measurement Study
April 6, 2012 updated by: Alcon Research
To assess which commercially available measurement device is most accurate in measuring low (< 1.0 D) degrees of corneal astigmatism.
Study Overview
Status
Completed
Conditions
Study Type
Observational
Enrollment (Actual)
50
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
-
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Texas
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Fort Worth, Texas, United States, 76134
- Alcon Call Center for Trial Locations
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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
50 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Sampling Method
Non-Probability Sample
Study Population
community sample
Description
Inclusion Criteria:
- 50 years of age and older
- Proof of eye exam within the last 3 months
- Corneal astigmatism of <1.0 diopter
Exclusion Criteria:
- Prior history of refractive or corneal surgery
- Corneal trauma/disease
- Intraocular surgery
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
Cohorts and Interventions
Group / Cohort |
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1
Measurement device
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Measurement of corneal power
Time Frame: Day 1
|
Day 1
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
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
December 1, 2008
Primary Completion (Actual)
April 1, 2009
Study Completion (Actual)
April 1, 2009
Study Registration Dates
First Submitted
January 6, 2009
First Submitted That Met QC Criteria
January 6, 2009
First Posted (Estimate)
January 7, 2009
Study Record Updates
Last Update Posted (Estimate)
April 9, 2012
Last Update Submitted That Met QC Criteria
April 6, 2012
Last Verified
July 1, 2009
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- P-08-04
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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-
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-
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-
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-
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-
Coopervision, Inc.Completed
-
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-
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-
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