Treatment of Cystoid Macular Edema in Patients With Retinal Degeneration
Seven patients with X-linked retinoschisis were treated with dorzolamide and the response to this treatment was monitored using OCT. These patients were also tested for the causative gene mutation and the resultant mechanism of functional loss of retinoschisin. It was observed that a response to dorzolamide may be seen irrespective of the mechanism that leads to decrease in function of retinoschisin.
|Study Design:||Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Treatment of Cystoid Macular Edema in Patients With Retinal Degeneration|
- Decrease in the size of cystic macular lesions as tested by OCT [ Time Frame: 4-6 months ] [ Designated as safety issue: No ]
|Study Start Date:||October 2005|
|Estimated Study Completion Date:||December 2016|
|Estimated Primary Completion Date:||December 2016 (Final data collection date for primary outcome measure)|
Patients over the age of 18 years with cystoid macular edema and retinal degeneration will be treated with Trusopt.
2% dorzolamide- 1 Gtt TID
Other Name: Trusopt
A percentage of patients with retinal degeneration, a group of progressive blinding diseases, are known to develop fluid within the center part of their retina known as macular edema. Previous studies have documented that an oral form of carbonic anhydrase inhibitor (acetazolamide) can be effective in reducing the amount of macular edema in such patients (Archives of Ophthalmology, 106:1190-1195, 1988; 107:1445-1452, 1989). However, the use of the oral form of this medication is known to cause clinically significant side effects such as fatigue and loss of appetite.
A topical form of carbonic anhydrase inhibitor, (Trusopt) has promise for having a similar beneficial effect on the retinal fluid while not having the systemic side effects observed with the oral form of medication.
In the current study, we propose to use topical Trusopt in a group of patients with retinal degeneration (RD) to determine its efficacy in reducing the amount of retinal fluid in patients with RD and macular edema. The methods will involve an initial one month treatment with topical Trusopt three times a day in each eye. After a period of one month, patients will return for a follow-up examination. At baseline, they will have had a measurement of their center vision and a measurement of their macular fluid with a photographic-like procedure termed optical coherence tomography (OCT). After the one month period of treatment, they will again have a measurement of their vision and re-evaluation with OCT. An improvement of one line or more of vision will be considered as a significant improvement. Since the short-term intervisit variability in the area of macular edema in patients with RD can vary from 11% to 16%, a reduction in fluid of at least 25% in area will be considered as a clinically significant improvement of macular edema.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00716586
|Contact: Gerald A Fishman, MDfirstname.lastname@example.org|
|United States, Illinois|
|University of Illinois Medical Center||Recruiting|
|Chicago, Illinois, United States, 60612|
|Contact: Gerald A Fishman, MD 312-996-8939 email@example.com|
|Principal Investigator:||Gerald A Fishman, MD||University of Illinois at Chicago|