- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01084902
Efficacy Comparison of Xalatan and Azopt on POAG and OH
Comparison of the Effects of Latanoprost(0.005%) and Brinzolamide(1.0%) on Intraocular Pressure in Primary Open-angle Glaucoma and Ocular Hypertension
Prostaglandin analogs (PGAs) represent a new class of active ocular hypotensive agents and possess a unique mechanism of action. Many studies suggested that 0.005% Latanoprost was more effective and safer than other anti-glaucoma medications, such as beta-blockers. It has also been found to be more effective than other class of anti-glaucoma medications such as carbonic anhydrase inhibitors and alpha agonists. However data on such comparison is lacking in Chinese patients. So it is necessary to increase China experience and get clinical data from China. Besides latanoprost, brinzolamide is known as one of the other ocular hypotensive agents with less systemic adverse effects, therefore it is selected as the controlled medication of this study. The administration phase will be 4 weeks because it is long enough to compare both efficacy and safety of the study drugs and accounting for following-up conditions in China, it will be easier for the investigators to get enough subjects in a limited stage if the observation time is shorter.
Before treatment with the study drugs, any previous glaucoma drugs will be washed out. The minimum washout periods are 5 days for cholinergic agonists, 1 week for adrenergic agonists, 3 weeks for adrenergic β receptor blockers and 4 weeks for PGAS. After washout, the patients will be randomised send to two parallel study groups: one group will receive latanoprost 0.005% once daily in the evening, the other group receive 1.0% Brinzolamide twice daily. Randomization will be obtained using a list of random numbers .During the study there will be four visits: screening, baseline, 2 weeks, and 4 weeks of treatment. The IOP will be measured with a Goldmann tonometer at 8 am for each visit. The tonometry will be performed before the administration of the dose of the day in patients treated with Brinzolamide. Three separate measurements will be taken for each eye and the mean of the three measurements will be used in the statistical analysis. Best corrected visual acuity and refraction will be determined and a slit lamp examination, ophthalmoscopy will be performed at all visits.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Diagnosed with POAG or OHT
- Older than 18 years, either sex
- With IOP≤30mmHg in both eyes and with IOP>21mmHg in either eye after washout
- Understand the study instructions and are willing to attend at all follow-up appointments
- Be willing to comply with study medication use
- Ready for written informed consent
Exclusion Criteria:
- Visual field defects within the central 10°
- Absence of vision in one eye
- History of hypersensitivity to any components of the study medications
- Contraindications to carbonic anhydrase inhibitors or prostaglandins
- History of ocular herpetic disease, uveitis, or cystoid macular edema
- Ocular history of trauma, inflammation, surgery or use of corticosteroids (within 2 months)
- History of ocular laser therapy within 3 months
- Severe dry eyes
- Signs of ocular infection, except blepharitis
- Corneal abnormality that may affect IOP measurements
- Unwilling to accept the risk for hyperchromia of the iris or development of hypertrichosis
- Pregnant females or lactating mothers
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: latnoprost
once daily
|
once daily
|
Active Comparator: Brinzolamide
two times daily
|
Two times daily
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Intraocular Pressure
Time Frame: Baseline, 2 weeks, 4 weeks
|
Three separate measurements will be taken for each eye.
And mean result will be taken if the difference between measurements is within 2 mmHg , or use the median if the difference between measurements is greater than 3 mmHg.
|
Baseline, 2 weeks, 4 weeks
|
Collaborators and Investigators
Sponsor
Investigators
- Study Chair: Yingzi Pan, doctor, Peking University First Hospital
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
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
- PKU1H001
- PKU1H (Other Grant/Funding Number: IIR)
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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