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Ophthalmology. 2011 Dec;118(12):2398-402. doi: 10.1016/j.ophtha.2011.05.013.

The relationship between glaucoma medication adherence, eye drop technique, and visual field defect severity.

Author information

  • 1Division of Pharmaceutical Outcomes and Policy, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7590, USA. betsy_sleath@unc.edu

Abstract

OBJECTIVE:

The purpose of the study was to examine (1) how patient adherence and eye drop technique were associated with visual field defect severity and (2) how general glaucoma adherence self-efficacy and eye drop technique self-efficacy were related to visual field defect severity.

DESIGN:

Cross-sectional study conducted at a single private practice site.

PARTICIPANTS:

Patients using eye drops for their glaucoma.

METHODS:

Subject adherence to glaucoma medications through Medication Events Monitoring System (MEMS) devices were measured, and eye drop instillation technique was assessed by video recording. General glaucoma medication adherence self-efficacy was measured using a 10-item scale, and eye drop technique self-efficacy was measured using a 6-item scale. Multivariate logistic regression was used to analyze the data.

MAIN OUTCOME MEASURES:

Visual field defect severity.

RESULTS:

Patients who were less than 80% adherent according to the MEMS devices were significantly more likely to have worse defect severity. Patients with lower scores on the general glaucoma medication adherence self-efficacy scale also were significantly more likely to have worse defect severity. Eye drop technique and eye drop technique self-efficacy were not related significantly to visual field defect severity.

CONCLUSIONS:

Eye care providers need to assess patient adherence and to work with those patients with poor adherence to find ways to improve their ability and self-efficacy in using their glaucoma medications.

FINANCIAL DISCLOSURE(S):

Proprietary or commercial disclosure may be found after the references.

Copyright © 2011 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.

PMID:
21856009
[PubMed - indexed for MEDLINE]
PMCID:
PMC3223548
Free PMC Article
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