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Corneal Topographer Fluorescein Patterns

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2007 by University of Iowa.
Recruitment status was:  Recruiting
Information provided by:
University of Iowa Identifier:
First received: December 21, 2007
Last updated: NA
Last verified: December 2007
History: No changes posted
The objective of this study is to determine if corneal topography can be used to predict the fluorescein pattern of keratoconus lenses on the eye. A corneal topography image will be taken and the computer selected lens will be placed on the eye. After placement of the lens color photographs will be taken of the eye's fluorescein pattern and compared to the computer predicted pattern.

Condition Intervention
Keratoconus Other: Comparison of fluorescein patterns

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Supportive Care
Official Title: Objective and Subjective Correlation Between Clinical Fluoroscein Patterns and Theoretical Patterns Using the Medmont Corneal Topographer

Resource links provided by NLM:

Further study details as provided by University of Iowa:

Primary Outcome Measures:
  • There will be no inter-patient comparison. Bearing and elevation fluorescein patterns will be compared between the actual (photo) and theoretical (computer generated) fluorescein patterns. [ Time Frame: 1 year after last subject is enrolled ]

Secondary Outcome Measures:
  • Improved comfort [ Time Frame: one day ]

Estimated Enrollment: 0
Study Start Date: November 2007
Estimated Primary Completion Date: December 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1 Other: Comparison of fluorescein patterns
Compare conventional contact lens fitting to fitting contact lenses based on corneal topography measurement

Detailed Description:

Subject population: keratoconus patients who have not undergone corneal surgery 100 subjects who come to UIHC for their contact lens care. We will approach them at their visit. We will not call potential participants from a database.

If topography is impossible to capture. Concommitant Corneal Disease Minors will be excluded


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

18yrs of age or older diagnosis of keratoconus contact lens wearer

Exclusion Criteria:

Concommittant corneal disease or surgery Inability to capture topography measurement

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00584285

Contact: Christine W Sindt, OD 319-356-4816

United States, Iowa
University of Iowa Hospitals and Clinics - Dept. of Ophthalmology Recruiting
Iowa City, Iowa, United States, 52242
Principal Investigator: Christine W Sindt, OD         
Sponsors and Collaborators
University of Iowa
Principal Investigator: Christine W. Sindt, OD University of Iowa
  More Information

Responsible Party: Christine Sindt, OD, University of Iowa Identifier: NCT00584285     History of Changes
Other Study ID Numbers: 200709737
Study First Received: December 21, 2007
Last Updated: December 21, 2007

Additional relevant MeSH terms:
Corneal Diseases
Eye Diseases processed this record on August 18, 2017