Abstract
Purpose: To evaluate the accuracy of a prototype electronic device for recording eye drop usage. Participants and Methods: Ten volunteers were randomly assigned to one of five usage patterns designed to mimic common patterns of use in glaucoma patients from 100% compliant to 50% compliant. All participants agreed to adhere to a pre-determined "dosing" schedule for 15 days using the monitoring/reminder device to instill artificial tears. Participants also recorded drop usage in a diary. The main outcome measures were device accuracy and reproducibility. Device accuracy was defined as the magnitude of the difference between the diary and device output for three variables: date, number of drops, and instillation time. Results: Date stamping by the device was 100% accurate. The mean ± SD time difference between the device and the diary was -2.0 ± 19.7 minutes when data from all participants was pooled. In seven of the ten participants, the device did not record at least one drop. The mean ± SD difference in the number of drops recorded by the device minus the diary was 0.16 ± 0.97 when data from all participants was pooled. Conclusions: The prototype compliance reminder/monitoring device may underestimate compliance in some patients. The date and time stamping mechanisms were generally accurate and reproducible.
Original language | English (US) |
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Pages (from-to) | 30-34 |
Number of pages | 5 |
Journal | Journal of glaucoma |
Volume | 15 |
Issue number | 1 |
DOIs | |
State | Published - Feb 2006 |
ASJC Scopus subject areas
- Ophthalmology