COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu

Analysis of Eye Tissue

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00001224
Recruitment Status : Completed
First Posted : November 4, 1999
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Brief Summary:

The purpose of this investigation is to better understand the inflammatory process that occurs in uveitis (eye inflammation) through study of eye tissues.

Patients with uveitis sometimes develop cataracts (clouding of the lens of the eye) or clouding of the vitreous-the gel-like material behind the lens-that can impair eyesight. Those who require cataract surgery or vitrectomy are eligible for this study. Samples of eye tissue and fluid normally removed during standard surgical procedures for these conditions will be given to researchers instead of discarded, as is usually done.

Before surgery, patients will undergo routine preoperative tests, including chest X-ray, electrocardiogram, blood tests and urinalysis. They will also have an eye examination and photographs taken of the retina. Other tests that may be performed include fluorescein angiography to evaluate the blood vessels of the retina; ultrasound to examine the back of the eye; and a gallium scan to evaluate inflammation.

Immune cells in the blood and eye tissue will be compared and categorized by disease. The eye fluid will be examined for substances involved in the inflammatory process. These studies may provide information that will lead to improved methods of diagnosis and treatment.

Condition or disease
Eye Disease Inflammation Uveitis

Detailed Description:
The purpose of this project is to evaluate intra-ocular tissue such as iris or vitreous from uveitis patients in order to analyze the type and character of the inflammatory response. Patients with a history of uveitis who require cataract surgery or vitreous surgery because of the clinical complications of inflammation, will be entered in this study. The lymphocyte subsets in the peripheral blood and ocular tissue will be compared and categorized by disease. The presence of soluble lymphokines in the intra-ocular fluid will be analyzed. Long term cell cultures of vitreal cells will be attempted to define the T-cell receptors. In addition, a portion of iris tissue or vitreous cells will be frozen to establish a tissue library of uveitis.

Layout table for study information
Study Type : Observational
Enrollment : 150 participants
Official Title: Immunologic Analysis of Intra-Ocular Tissue
Study Start Date : July 1987
Study Completion Date : September 2002

Resource links provided by the National Library of Medicine

Information from the National Library of Medicine

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, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Patients of either sex will be admitted to this study.

All patients should have a previous history of uveitis.

The patient must have lenticular or vitreal opacities which are significantly impairing their vision and for which surgical removal of the opacity has a reasonable chance of improving the vision.

Patients should have vision of 20/80 or worse.

Patients may have any of the following syndromes: anterior uveitis, including HLA-B27-associated iritis and juvenile rheumatoid arthritis, ocular sarcoid, intermediate uveitis and pars planitis, birdshot retinochoroidopathy, Behcet's disease, Vogt-Koyanagi-Harada's syndrome, sympathic ophthalmia and idiopathic posterior uveitis.

Information from the National Library of Medicine

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 identifier (NCT number): NCT00001224

Layout table for location information
United States, Maryland
National Eye Institute (NEI)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Eye Institute (NEI)
Layout table for additonal information Identifier: NCT00001224    
Other Study ID Numbers: 870104
First Posted: November 4, 1999    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: September 2002
Keywords provided by National Institutes of Health Clinical Center (CC):
Ocular Inflammatory Disease
Cataract Surgery
Lenticular Opacity
Vitreal Opacity
Additional relevant MeSH terms:
Layout table for MeSH terms
Eye Diseases
Pathologic Processes
Uveal Diseases