Digital Photography to Evaluate Dry Eye
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|ClinicalTrials.gov Identifier: NCT00073099|
Recruitment Status : Completed
First Posted : November 17, 2003
Last Update Posted : July 2, 2017
Surface eye problems (problems of the cornea and conjunctiva), such as dry eye, are often evaluated using ocular surface staining - the application of a colored dye to the surface of the eye. The physician examines the nature, degree, and pattern of staining on the eye's surface to determine the diagnosis, assess disease severity, and document treatment effects. Grading of ocular surface staining is often used in research studies to measure the response to a treatment or treatment side effects. Therefore, it is critical that the grading methodology be reproducible and sufficiently detailed to detect changes in eye health status. Current evaluation techniques using these dyes are somewhat subjective, however, since they require human assessment and judgment. This study will assess the validity and reliability of digital photography and compare it with standard slit lamp evaluation for analyzing ocular surface dye staining to document surface eye damage in patients with dry eye.
Patients 3 years of age and older with dry eye may be eligible for this study. Participants will have the following tests and procedures:
- Visual acuity: (eye chart) test
- Slit lamp evaluation: Examination of the front part of the eye with a special microscope called a slit lamp biomicroscope. Special dyes derived from vegetables are instilled into the eye to stain the surface of the eye where it is dry and damaged. The doctor then determines the extent of staining. The staining will be repeated within one week of the first examination.
- Digital eye photography: Digital photographs of the eye are taken to aid in assessing the extent of dry eye changes. The camera flashes a bright light for each picture. About 5 to 10 pictures are taken for each eye.
|Condition or disease|
|Study Type :||Observational|
|Estimated Enrollment :||60 participants|
|Official Title:||Digital Image Based Determination of Ocular Surface Vital Dye Staining|
|Study Start Date :||November 14, 2003|
|Estimated Study Completion Date :||September 6, 2007|
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): NCT00073099
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike|
|Bethesda, Maryland, United States, 20892|