Author： Konstas A. G. P. Pikilidou M. I. Tsironi S. Mikropoulos D. Kozobolis V. P. Sarafidis P. A. Lasaridis A. N. Nelson L. A. Stewart W. C.
Publisher： Informa Healthcare
ISSN： 0271-3683
Source： Current Eye Research, Vol.34, Iss.5, 2009-05, pp. : 369-377
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Abstract
Purpose: To evaluate 24-hr intraocular pressure (IOP) and blood pressure (BP) with timolol or latanoprost/timolol fixed combination (LTFC). Methods: Patients with primary open-angle glaucoma or ocular hypertension with normal blood pressure were randomized to LTFC, dosed each evening, or timolol dosed twice daily in a cross-over design for 8 weeks and the opposite medicine for 8 weeks. IOP was measured at 02:00, 06:00, 10:00, 14:00, 18:00 and 22:00 hours in the sitting position with Goldmann applanation tonometry and BP monitoring every 30 min while awake and every hour while asleep at the end of each 8-week treatment period. Results: Twenty-nine patients had a 24-hr baseline IOP of 26.3 ± 2.5 mmHg, systolic BP (SBP) of 121.4 ± 12.4 mmHg, diastolic BP (DBP) 72.9 ± 7.1 mmHg, and ocular perfusion pressure (OPP) of 33.9 ± 5.7 mmHg. No statistical differences were found between untreated and treated 24-hr SBP, DBP, mean BP (MBP), heart rate, or nocturnal BP dipping status with either medication. LTFC lowered IOP more at each timepoint compared to timolol (difference between treatments 2.7 mmHg, p = 0.0002). Conclusions: Neither timolol or evening-dosed LTFC reduced SBP, DBP, MBP, OPP, or increased nocturnal dipping. LTFC was more effective than timolol in decreasing IOP.
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