Medication Adherence Among Patients With Corneal Diseases.
2021
PURPOSE Medication nonadherence is a ubiquitous problem. However, the adherence of patients to medications to manage corneal conditions is unknown. A prospective cohort study investigated the patterns of eye drop adherence among patients with corneal conditions. METHODS Patients older than or equal to 18 years taking prescription eye medications were recruited from an academic center's corneal clinic. Data collected included age, sex, total doses of eye medications, and category of primary corneal diagnosis. Participants completed adapted versions of the 12-question Adherence to Refills and Medications Scale (ARMS) and the 3-question Voils' Medication Adherence Scale (VMAS). Survey data were dichotomized as "adherent" and "nonadherent," and subscales reported for reasons of nonadherence. Logistic regression analyses were used to test associations with adherence. RESULTS A total of 199 participants were surveyed from February to March 2019 (95% response rate). Participants were aged 19 to 93 years with a mean age of 59 years (SD 17.8). The percent of participants considered nonadherent was 72% by the ARMS and 33% by the VMAS. Older age was associated with higher adherence by the ARMS (odds ratio = 1.48, 95% confidence interval, 1.14-1.93, P = 0.004) and by the VMAS (odds ratio = 1.24, confidence interval, 1.04-1.48, P = 0.012). Adherence was not significantly associated with race, sex, education, total doses of eye medications, or primary cornea diagnosis. CONCLUSIONS Medication adherence was lower than expected, particularly on the ARMS scale that asks more detailed questions. Clinicians should engage in conversations about adherence, especially with younger patients, if they are not seeing an expected clinical response.
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