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Circadian Intraocular Pressure Fluctuation and Disease Progression in Primary Angle Closure Glaucoma. | LitMetric

Circadian Intraocular Pressure Fluctuation and Disease Progression in Primary Angle Closure Glaucoma.

Invest Ophthalmol Vis Sci

Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China 4Hong Kong Eye Hospital, Kowloon, Hong Kong SAR, China 5Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, Hong Kong.

Published: July 2015

AI Article Synopsis

  • - The study aimed to monitor daily intraocular pressure (IOP) fluctuations in patients with primary angle closure glaucoma (PACG) using contact lens sensors and assess its link to disease progression.
  • - Researchers analyzed IOP data from 25 PACG eyes and found significant differences in IOP fluctuations between eyes showing progressive disease and those that were stable.
  • - The findings suggest that larger IOP fluctuations may indicate disease progression in PACG, highlighting the potential for using continuous IOP monitoring as a tool in managing glaucoma.

Article Abstract

Purpose: To document the continuous circadian intraocular pressure (IOP) fluctuation using a contact lens sensor during normal daily activities, and to study the relationship between IOP fluctuation and disease progression in primary angle closure glaucoma (PACG) eyes.

Methods: Circadian IOP fluctuations were recorded by Sensimed Triggerfish sensors in 25 PACG eyes. The sensor output signals were smoothed using B-spline smoothing transform and described by functional data analysis. Glaucoma progression was documented with serial changes in mean deviation (MD) and visual field index (VFI) in Humphrey automated perimetry and retinal nerve fiber layer (RNFL) thickness. The signals were compared between the progressive and stable groups by permutation tests on functional t-statistic.

Results: Statistically significant differences were found from 2200 to 2300 and from 0700 to 0800 in gradients of the IOP fluctuation curve, as well as from 2300 to 2400 and 0800 to 0900 in curvatures of the IOP fluctuation curves, between the progressive MD and stable MD groups (P < 0.05). Significant gradient differences were also found from 1500 to 1600 and 0600 to 0800 between the progressive VFI and stable VFI groups, and from 2400 to 0100 and 0200 to 0300 between the progressive RNFL and stable RNFL groups (P < 0.05).

Conclusions: Significant differences in circadian IOP fluctuation between progressive and stable PACG eyes were identified. Large IOP fluctuations may be associated with disease progression in PACG eyes.

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Source
http://dx.doi.org/10.1167/iovs.15-17245DOI Listing

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