Glaucoma, Open-Angle Clinical Trial
Official title:
A Double-masked Comparison of the Effect of Dorzolamide and Timolol on Optic Disk Blood Flow in Patients With Open Angle Glaucoma
Glaucoma is one of the most common causes of blindness in the industrialized nations. For a
long time glaucoma has been defined as a disease in which high intraocular pressure (IOP)
leads to irreversible optic disk damage and concommitant visual field loss. However, recent
investigations show that IOP is not necessarily an adequate measure of clinical severity or
a predictor of clinical progression: about 20% of all eyes with high IOP do not develop
visual field loss and some patients suffering from visual field loss due to optic disk
damage have normal IOP. Hence, factors other than IOP are likely involved in the
pathogenesis of glaucoma. The role of vascular factors in the pathogenesis of glaucoma has
recently received much attention and optic nerve head hypoperfusion may play a critical role
in the development of glaucoma. It may therefore be important for an optimal prevention of
visual field defects in glaucoma that the topical antiglaucoma drugs used do not only reduce
IOP but also stabilize or enhance the perfusion of the optic nerve head.
Therefore, the aim of the present study is to compare the effect of a 3 months treatment
with timolol or dorzolamide in patients with open angle glaucoma on optic disk blood flow.
n/a
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Basic Science
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