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Intraocular pressure (IOP) reduction by latanoprost in Japanese normal tension glaucoma patients over a five-year period stratified by presenting IOP. | LitMetric

AI Article Synopsis

  • A study was conducted to evaluate how effective latanoprost is at lowering intraocular pressure (IOP) in Japanese patients with normal tension glaucoma (NTG) over a 5-year period.
  • The study grouped 38 NTG patients into high-tension (mean IOP ≥ 16 mmHg) and low-tension (mean IOP < 15 mmHg) categories, recording their IOP and visual field changes at multiple time points following daily latanoprost administration.
  • Results showed significant reductions in IOP for both high-tension and low-tension groups after 5 years, with latanoprost helping maintain visual field stability as indicated by Humphrey Field Analyzer results.

Article Abstract

Purpose: We examined the effectiveness of latanoprost for reducing intraocular pressure (IOP) in Japanese patients with normal tension glaucoma (NTG) over a 5-year period.

Design: Prospective interventional case series. The patients were classified into 2 groups based on mean IOP.

Methods: A total of 38 patients with NTG were studied after being classified into the high-tension (mean IOP 16 mmHg or greater, n = 27) and low-tension (mean IOP lower than 15 mmHg, n = 11) groups. IOP was measured and Humphrey Field Analyzer (HFA) examinations were conducted at 6, 12, 24, 36, 48, and 60 months after beginning a daily administration of latanoprost.

Results: Mean IOP before administration was 17.6 mmHg in the high-tension group, which was reduced to 13.9, 14.6, 14.4, 14.1, 13.6, and 14.6 mmHg at 6, 12, 24, 36, 48, and 60 months, respectively, after beginning administration. That in the low-tension group was 13.6 mmHg before administration, and then was reduced to 12.2, 11.4, 11.5, 12.5, 10.5, and 11.5 mmHg, respectively, after beginning administration was noted. Mean deviation (MD) values in the HFA examinations were reduced by -4.27 and -1.49 dB after 5 years in the high- and low-tension groups, respectively.

Conclusions: Latanoprost administration was effective in reducing IOP over a 5-year period in a range of 3.1-4.1 and 1.3-3.6 mmHg in NTG patients with high- and low-tension levels, respectively. In addition, our results indicate that latanoprost helped to prevent a decrease in MD values in both groups, as shown by the results of HFA examinations.

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Source
http://dx.doi.org/10.1089/jop.2008.0097DOI Listing

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