Document Detail

Retrobulbar haemodynamic effects of the latanoprost/timolol and the dorzolamide/timolol fixed combinations in newly diagnosed glaucoma patients.
MedLine Citation:
PMID:  17343668     Owner:  NLM     Status:  MEDLINE    
The objective of this study was to compare the effect of the latanoprost/timolol fixed combination (LTFC) and the dorzolamide/timolol fixed combination (DTFC) on the retrobulbar haemodynamic and intraocular pressure (IOP) in patents with open-angle glaucoma (OAG). This was a prospective, examiner masked, randomised and crossover study. Participants were 32 consecutive subjects, who met the inclusion/exclusion criteria, with newly diagnosed OAG. Patients were randomised to either LTFC or DTFC for the first 1-month treatment phase after a 1-month washout period, without medical treatment, patients began with the opposite treatment for the second 1-month treatment period. Colour Doppler parameters in ophthalmic artery (OA) and posterior ciliary arteries (PCA), ocular perfusion pressure, IOP and systemic haemodynamics were assessed at each baseline and at the end of each treatment period. The main outcomes include peak systolic velocity (PSV), end-diastolic velocity (EDV) and resistance index (RI) in OA and PCA. DTFC significantly increased EDV in OA from 7.55 (1.16) to 9.32 (1.22), p<0.0001, and in the PCA from 4.41 (0.70) to 5.36 (0.60), p<0.0001, and significantly decreased RI in OA from 0.775 (0.036) to 0.725 (0.032), p<0.0001, and in the PCA from 0.694 (0.045) to 0.634 (0.034). LTFC significantly decreased the EDV and significantly increased RI in PCA, p=0.0076 and p=0.0009, respectively. There were no statistical significant differences in the IOP lowering effect between both treatments. DTFC seems to have a beneficial vascular effect on retrobulbar vessels in OAG patients.
A Martinez; M Sanchez
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2007-03-02
Journal Detail:
Title:  International journal of clinical practice     Volume:  61     ISSN:  1368-5031     ISO Abbreviation:  Int. J. Clin. Pract.     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-05-11     Completed Date:  2007-08-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9712381     Medline TA:  Int J Clin Pract     Country:  England    
Other Details:
Languages:  eng     Pagination:  815-25     Citation Subset:  IM    
Instituto Gallego de Oftalmología, C/ Ramón Baltar sn, Santiago de Compostela, La Coruña, Spain.
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MeSH Terms
Aged, 80 and over
Blood Flow Velocity / drug effects
Ciliary Arteries / physiology
Cross-Over Studies
Drug Combinations
Glaucoma, Open-Angle / drug therapy*,  physiopathology
Intraocular Pressure / drug effects*
Middle Aged
Ophthalmic Artery / physiology
Prospective Studies
Prostaglandins F, Synthetic / therapeutic use*
Sulfonamides / therapeutic use*
Thiophenes / therapeutic use*
Timolol / therapeutic use*
Reg. No./Substance:
0/Drug Combinations; 0/Prostaglandins F, Synthetic; 0/Sulfonamides; 0/Thiophenes; 130209-82-4/latanoprost; 130693-82-2/dorzolamide; 26839-75-8/Timolol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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