Abnormalities of the Eye's Anterior Chamber, Iris, Cornea and Lens

This study has been completed.
Information provided by:
National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov Identifier:
First received: November 3, 1999
Last updated: March 3, 2008
Last verified: August 2002

This study will investigate congenital or developmental eye abnormalities that affect the iris, cornea and lens, and are usually accompanied by elevated pressure within the eye. These disorders can cause vision loss, and the increased eye pressure can lead to glaucoma, a condition that may also cause loss of eyesight.

Patients with eye anterior chamber eye disease, such as Axenfeld's syndrome, Rieger's anomaly, Peter's anomaly, iridocorneal endothelial syndrome, megalocornea, ocular hypertension, and others, are eligible for this study. Participants will have a medical examination, family history, and comprehensive eye examination. Tests and procedures may include photographs of the cornea, iris, and the structure through which fluid that normally circulates behind the cornea drains out of the eye. Some patients may undergo indentation tonography to measure how easily this fluid drains. In this procedure, the patient lies on an examination table and both eyes are numbed with eye drops. A small instrument (tonometer) is placed on the surface of one eye, and with the other eye, the patient looks at an overhead light. Other tests may include photographs of the back of the eye and ultrasound imaging of the structures of the eye. A blood sample may be drawn to study the genetic disorder responsible for the disease. Patients will have follow-up examinations every 6 months for the duration of the study.

Medical or surgical therapy will be recommended, as appropriate, for patients who develop elevated eye pressure or vision loss.

Eye Abnormality
Ocular Hypertension
Open Angle Glaucoma

Study Type: Observational
Official Title: Anomalies of the Anterior Chamber, Angle, Iris, Cornea and Lens With or Without Glaucoma or Ocular Hypertension

Resource links provided by NLM:

Further study details as provided by National Institutes of Health Clinical Center (CC):

Estimated Enrollment: 100
Study Start Date: July 1977
Estimated Study Completion Date: August 2002
Detailed Description:
This study will concentrate on abnormalities of the anterior chamber with or without elevated intraocular pressure. The purpose of the study will be to determine if there is a common pathogenesis shared by these conditions. A natural history study of 40 individuals with these diseases will utilize clinical measurements and photographs for documentation of this hypothesis. In addition, surgical specimens, when available, will be studied.

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

The eye conditions to be studied include Axenfeld's syndrome, Rieger's anomaly, Peter's anomaly, (all with or without glaucoma), Iridocorneal Endothelial syndrome, Aniridia, Pigment Dispersion syndrome, Megalocornea and other conditions with clinical abnormalities of the anterior chamber.

Patients will not be included in the study if they do not fit the morphologic characteristics of the disease in question or if the patient's general medical condition or other related factors make it impossible for him or her to continue participation in the study.

  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 ClinicalTrials.gov identifier: NCT00001161

United States, Maryland
National Eye Institute (NEI)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Eye Institute (NEI)
  More Information

ClinicalTrials.gov Identifier: NCT00001161     History of Changes
Other Study ID Numbers: 770119  77-EI-0119 
Study First Received: November 3, 1999
Last Updated: March 3, 2008
Health Authority: United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):
Irido Corneal Angle
Congenital Anomalies
Neural Crest
Increased Intraocular Pressure
Axenfeld's Syndrome
Rieger's Anomaly
Peter's Anomaly
Iridocorneal Endothelial Syndrome
Pigment Dispersion Syndrome

Additional relevant MeSH terms:
Congenital Abnormalities
Eye Abnormalities
Glaucoma, Open-Angle
Ocular Hypertension
Cardiovascular Diseases
Eye Diseases
Eye Diseases, Hereditary
Genetic Diseases, Inborn
Iris Diseases
Uveal Diseases
Vascular Diseases

ClinicalTrials.gov processed this record on May 26, 2016