- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00005911
Magnetic Resonance Imaging to Study the Normal Eye
Refinement of the Magnetic Resonance Imaging Technique for the Study of the Normal Eye, Particularly the Lens and Cataract
This study will assess the value of improved magnetic resonance imaging (MRI) techniques to study the lens of the human eye. Knowledge of how cataracts develop and progress has been hampered by the lack of human tissue available for study; MRI may provide an effective means for learning more about this eye disease.
Normal volunteers between 18 and 70 years of age may be eligible for this study. Participants will undergo a medical history and complete eye examination, including vision assessment, eye pressure measurement, lens and retina examinations, and photography of the eye.
MRI scans will be scheduled for a second visit. For this procedure, the volunteer's pupils are dilated and he or she then lies on a stretcher that is moved into a cylinder containing a magnetic field. A device similar to a welder's helmet is placed on the head. Attached to the device are an imaging probe and a small blinking light. The probe receives radio signals from the eye that a computer converts into images. During imaging, the participant gazes at the blinking light; this helps keep the eyes from blinking and wandering. Scan times vary from 2 to 10 minutes; the total time for the study is less than an hour.
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment
Contacts and Locations
Study Locations
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Maryland
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Bethesda, Maryland, United States, 20892
- National Eye Institute (NEI)
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Must be between 18 and 70 years of age of either sex.
Must not have uveitis, glaucoma, or be at risk for an adverse reaction to dilation or have a history of allergic reaction to one of lthe dilating agents to be used.
Must not have any metallic prosthesis, cardiac pacemakers, neural pacemakers, surgical clips in the brain or on blood vessels, surgically implanted metal plates, screws or pins, cochlear implants or metal objects in the body especially in the eye.
Study Plan
How is the study designed?
Collaborators and Investigators
Sponsor
Publications and helpful links
General Publications
- Kinoshita JH, Kador P, Catiles M. Aldose reductase in diabetic cataracts. JAMA. 1981 Jul 17;246(3):257-61. No abstract available.
- Reddy VN, Schwass D, Chakrapani B, Lim CP. Biochemical changes associated with the development and reversal of galactose cataracts. Exp Eye Res. 1976 Nov;23(5):483-93. doi: 10.1016/0014-4835(76)90157-3. No abstract available.
- Datiles M, Fukui H, Kuwabara T, Kinoshita JH. Galactose cataract prevention with sorbinil, an aldose reductase inhibitor: a light microscopic study. Invest Ophthalmol Vis Sci. 1982 Feb;22(2):174-9.
Study record dates
Study Major Dates
Study Start
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 000151
- 00-EI-0151
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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