The Collaborative Longitudinal Evaluation of Keratoconus (CLEK) Study
NCT00000155 · Status: UNKNOWN · Type: OBSERVATIONAL
Last updated 2005-06-24
Summary
To describe the clinical course of keratoconus and to describe the relationships among its visual and physiological manifestations, including high- and low-contrast visual acuity, corneal curvature, slit lamp biomicroscopic findings, corneal scarring, and quality of life.
To identify risk factors and protective factors that influence the severity and progression of keratoconus.
Conditions
- Keratoconus
Sponsors & Collaborators
-
National Eye Institute (NEI)
lead NIH
Eligibility
- Min Age
- 12 Years
- Sex
- ALL
- Healthy Volunteers
- No
Timeline & Regulatory
- Start
- 1995-06-30
Countries
- United States
Study Locations
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