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Effect of travoprost on 24-hour intraocular pressure in normal tension glaucoma

Authors Yuya Nomura, Shunsuke Nakakura, Mitsuyasu Moriwaki, et al

Published 23 July 2010 Volume 2010:4 Pages 643—647

DOI https://doi.org/10.2147/OPTH.S10521

Review by Single-blind

Peer reviewer comments 2

Yuya Nomura1, Shunsuke Nakakura2, Mitsuyasu Moriwaki1, Yasuhiro Takahashi1, Kunihiko Shiraki1
1Department of Ophthalmology and Visual Sciences, Graduate School of Medicine, Osaka City University, Japan; 2Department of Ophthalmology, Saiseikai Gose Hospital, Japan

Purpose: The effect of travoprost 0.004% on 24-hour intraocular pressure (IOP) was examined in patients with normal tension glaucoma (NTG).
Subjects and methods: This study included 17 patients with newly diagnosed unilateral NTG. IOP was measured at three-hour intervals over 24 hours by Goldman applanation tonometer in patients taking topical travoprost 0.004% and was compared retrospectively with 24-hour IOP data in untreated eyes.
Results: IOP values were significantly reduced at individual time points after treatment (P < 0.01). Mean 24-hour IOP, maximum 24-hour IOP, minimum 24-hour IOP, and 24-hour IOP fluctuations at baseline (mean ± SD) were 12.9 ± 2.2 mmHg, 15.4 ± 2.7 mmHg, 10.5 ± 2.2 mmHg, and 4.9 ± 1.2 mmHg, respectively, and were significantly reduced to 10.3 ± 2.0 mmHg, 12.4 ± 2.5 mmHg, 8.5 ± 1.9 mmHg (all P < 0.001), and 3.9 ± 1.5 mmHg (P < 0.05), respectively, after treatment. The rate of IOP reduction greater than 20% was 58.8% (10 eyes) for maximum 24-hour IOP and 53.0% (nine eyes) for mean 24-hour IOP.
Conclusion: Travoprost reduced IOP throughout the 24-hour study period, with over half of the eyes examined showing IOP reduction exceeding 20%.

Keywords: 24-hour intraocular pressure, fluctuation, normal tension glaucoma, travoprost, Travatan Z

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