|
Diabetic Retinopathy and Visual Function Study Clinical Trials References presented on Clinical Trials Search isn't meant to be a substitute for proven healthcare advice, trips or professional assistance using a genuine physician. We are not docs. Always confer with your physician about Diabetic Retinopathy and Visual Function Study conditions. Clinical Trials Search.org is a site devoted to listing clinical research studies in human subjects. Diabetic Retinopathy and Visual Function Study Clinical research trials and Diabetic Retinopathy and Visual Function Study healthcare trials happen in hundreds of localities throughout the United States of America. A clinical trial or clinical study is a research project with human volunteer subjects. Clinical drug trials and pharmaceutical clinical trials usually evaluate the potency of new drugs. The propose of the studies / projects is to answer particular human health questions. Clinical trials are a popular way for mDs, government agencies, and private sector companies to detect cures for all sorts of conditions, such as Diabetic Retinopathy and Visual Function Study. Diabetic Retinopathy and Visual Function Study Clinical Trials and other clinical trials allow volunteers to acquire healthcare treatment choices before they are available to the general public. Some times the subjects recieve professional assistance for free, and every now and again they are compensated for their time. Sometimes there is a cost for a Diabetic Retinopathy and Visual Function Study clinical trial. Subjects frequently obtain the most expert healthcare possible for their Diabetic Retinopathy and Visual Function Study condition. Risks are a reality, nevertheless, and can include more or frequent doctor trips, medical risks (possibly life-threatening), and/or the treatment being uneffective. Trials are federally governed with stern guidelines to protect clinical trials patients.
|
|
|
|
|
|
|
Home > "D" Clinical Trials Conditions > Diabetic Retinopathy and Visual Function Study  Diabetic Retinopathy and Visual Function Study
Diabetic Retinopathy and Visual Function Study
For Condition: Diabetic Retinopathy,Macular Degeneration,Vision, Subnormal
Status: Completed
Sponsor(s): National Eye Institute (NEI) ,
Synopsis: The purpose of this study is to evaluate possible mechanisms of central visual loss in patients with diabetes mellitus. The visual loss of interest to be investigated is that associated with macular edema (prior to and following laser photocoagulation treatment) and that associated with panretinal photocoagulation. The evaluation will be performed with psychophysical testing, i.e., static perimetry and contrast sensitivity function. Of particular interest, the mechanisms of visual loss associated with macular edema (prior to and following laser photocoagulation) will be further investigated. Photoreceptor-mediated visual loss will be assessed by measurements of the Stiles-Crawford effect. Visual loss mediated by post-receptoral retinal changes will be assessed by measuring the Westheimer spatial desensitization/sensitization effect.
Details: The purpose of this study is to evaluate possible mechanisms of central visual loss in patients with diabetes mellitus. The visual loss of interest to be investigated is that associated with macular edema (prior to and following laser photocoagulation treatment) and that associated with panretinal photocoagulation. The evaluation will be performed with psychophysical testing, i.e., static perimetry and contrast sensitivity function. Of particular interest, the mechanisms of visual loss associated with macular edema (prior to and following laser photocoagulation) will be further investigated. Photoreceptor-mediated visual loss will be assessed by measurements of the Stiles-Crawford effect. Visual loss mediated by post-receptoral retinal changes will be assessed by measuring the Westheimer spatial desensitization/sensitization effect.
Eligibility:
Study Type: Observational, Natural History
Minimum Age/Maximum Age: /
Genders: Both
Protocol Entry Criteria: Patients with diabetic retinopathy that has not been previously treated are eligible for the study. Patients who have had laser photocoagulation (either focal or scatter) are not eligible.
Total Enrollment: 100
Location and Contact Information:
National Eye Institute (NEI)
Bethesda, Maryland, 20892
United States
Additional Information:
Study ID Numbers: 930037; 93-EI-0037
Study Start Date: November 27, 1992
Record last reviewed: February 23, 2000
Additional information available at: clinicaltrials.gov
Clinicaltrials.gov Reference link: NCT00001346
Other Vision, Subnormal Studies:
1. Diabetic Retinopathy and Visual Function Study
Related Studies:
Other Vision, Subnormal Clinical Trials
Other Maryland Clinical Trials
Other Bethesda Clinical Trials
Diabetic Retinopathy and Visual Function Study
|
|
|
|
|
|
|
|
