Communication predicts medication self-efficacy in glaucoma patients

Delesha M. Carpenter, Susan J. Blalock, Robyn Sayner, Kelly W. Muir, Alan L. Robin, Mary Elizabeth Hartnett, Annette L. Giangiacomo, Gail E. Tudor, Betsy L. Sleath

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Purpose. Medication self-efficacy, or patients' confidence that they can perform medication-related behaviors, is associated with better glaucoma medication adherence. Little is known about how to enhance glaucoma patients' medication self-efficacy. Our purpose is to examine whether patient-provider communication increases glaucoma patients' medication self-efficacy. Methods. During an 8-month cohort study of 279 glaucoma patients and 15 providers, two office visits were videotaperecorded, transcribed, and coded for six patient-provider communication behaviors. Avalidated scale was used at baseline and 8-month follow-up to assess patients' confidence in overcoming adherence barriers (adherence barriers self-efficacy) and carrying out tasks to use eye drops correctly (eye drop task self-efficacy).We ran two generalized estimating equations to examine whether more frequent patient-provider communication during office visits predicted increased patient adherence barriers self-efficacy and eye drop task self-efficacy at 8-month follow-up. Results. For each additional topic providers educated about, patients reported an average increase of 0.35 in self-efficacy in overcoming adherence barriers (p < 0.001). Patients also reported an average increase of 1.01 points in eye drop task selfefficacy when providers asked about patients' views of glaucoma and its treatment versus not (p < 0.001). Patients who asked more medication questions (p < 0.001) and African-American patients (p < 0.05) reported lower adherence barriers self-efficacy by 0.30 and 2.15 points, respectively.Women had a 0.63 lower eye drop task self-efficacy than men (p < 0.05). Conclusions. When providers educate glaucoma patients and assess patient views about glaucoma and its treatment, patients report higher medication self-efficacy. Providers should be aware that patients who ask more medication questions may have less confidence in their ability to overcome barriers to adherence.

Original languageEnglish (US)
Pages (from-to)731-737
Number of pages7
JournalOptometry and Vision Science
Issue number7
StatePublished - Jun 21 2016


  • Eye drop technique
  • Glaucoma
  • Medication adherence
  • Patient-provider communication
  • Self-efficacy

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry


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