At the outpatient visit, the subjects underwent an ophthalmologic examination and cognitive function testing, and then demonstrated their typical eyedrop instillation technique using artificial tears (Soft SanTear; Santen, Osaka, Japan) while being video-recorded (HDR-CX470; SONY, Tokyo, Japan). After the video-recording, all subjects completed questionnaire-A about their instillation technique and experience. Medical staff members then instructed the subjects on the correct instillation method. Subjects reviewed the recorded video and finally completed questionnaire-B regarding changes in their perception of the eyedrop technique.
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