Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial.

Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Research Abstract Details 

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Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Abstract Text:

PURPOSE: To investigate whether increased fluctuation of intraocular pressure (IOP) is an independent factor for glaucoma progression. DESIGN: A cohort of patients was followed up in a randomized clinical trial. PARTICIPANTS: Two hundred fifty-five glaucoma patients from the Early Manifest Glaucoma Trial (EMGT; 129 treated and 126 control patients). METHODS: Study visits, conducted every 3 months, included ophthalmologic examinations, IOP measurements, and standard automated perimetry, with fundus photography every 6 months. Intraocular pressure values were included only until the time of progression in those eyes that showed such progression. Individual mean follow-up IOP and IOP fluctuation, calculated as the standard deviation of IOP at applicable visits, were the variables of main interest. Cox regression with time-dependent variables was used to evaluate the association between IOP fluctuation and time to progression, both with and without IOP mean in the models. These analyses also controlled for other significant variables. MAIN OUTCOME MEASURES: Glaucoma progression, as defined by a predetermined visual field criterion, worsening of the disk, assessed by an independent disc reading center, or both. RESULTS: Median follow-up time was 8 years (range, 0.1-11.1 years). Sixty-eight percent of the patients progressed. When considering mean follow-up IOP and IOP fluctuation in the same time-dependent model, mean IOP was a significant risk factor for progression. The hazard ratio (HR) was 1.11 (95% confidence interval [CI], 1.06-1.17; P<0.0001). Intraocular pressure fluctuation was not related to progression, with an HR of 1.00 (95% CI, 0.81-1.24; P = 0.999). CONCLUSIONS: These results confirm our earlier finding that elevated IOP is a strong factor for glaucoma progression, with the HR increasing by 11% for every 1 mmHg of higher IOP. Intraocular pressure fluctuation was not an independent factor in our analyses, a finding that conflicts with some earlier reports. One explanation for the discrepancy is that our analyses did not include postprogression IOP values, which would be biased toward larger fluctuations because of more intensive treatment. In contrast, in this EMGT report, no changes in patient management occurred during the period analyzed.

Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Publishing Authors By Initials

For similar visual fields research abstracts see: visual fields research

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Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Ophthalmology

VOLUME: 114

Page Numbers: 205-9

Journal Abbreviation: Ophthalmology

ISSN: 1549-4713

DAY: 13

MONTH: 11

YEAR: 2006

Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 7802443

Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Keywords Mesh Terms:

KEYWORDS: Visual Fields

MESH TERMS: physiopathology

Chemical & Substance for Abstract: Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial. Information

Substance Name: Betaxolol

Registry Number: 63659-18-7

Grant and Affiliation Information for Fluctuation of intraocular pressure and glaucoma progression in the early manifest glaucoma trial.

AFFILIATION: Department of Clinical Sciences, Ophthalmology, Lund University, Malmö University Hospital, Malmö, Sweden. boel.bengtsson@med.lu.se

Country: United States

AGENCY: United States NEI

GRANT: U10EY10261

ACRONYM: EY

MEDLINETA: Ophthalmology

REFSOURCE: Ophthalmology. 2007 Feb;114(2):203-4

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