Novel tactile bottle neck adaptor facilitates eye drop adherence in visually impaired patients

Praveena K. Gupta, Rhys Ishihara, Zhenyang Zhao, Shahin Owji, Easy Anyama, Mary Schmitz-Brown, Aisen C. Chacin, Bhavani Iyer, David Friedman, Malik Said Ladki

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose To test the use of Ring-IT, a novel 3D tactile bottle neck adaptor in topical eye drop adherence in visually impaired patients. Methods Bottle neck ring adaptors with either one, two or three protrusions with cube or sphere endings were designed. In phase 1, low vision was simulated in healthy subjects (n=20) with a 20/200 vision simulator; while in phase 2, visually impaired patients (n=26; 20/70 or worse) were recruited. Subjects were randomised to six combinations of varying protrusions and shapes on medication bottles and asked to identify these traits at different presentations. Responses and time to identify were recorded. Results Phase 1: 98.3% of subjects correctly identified the number of protrusions. Mean time to identify was 4.5±6.1 s. Identification success for cube and sphere end pieces were 91.7% and 73.3%, with average time for identification of 9.9±7.6 and 10.9±9.0 s. In phase 2, 92.3% of subjects correctly identified the number of protrusions. Mean time to identify was 6.0±3.0 s. Identification success for cube and sphere end pieces were 78.2% and 74.4%; with average time for identification of 7.5±4.8 and 8.5±5.6 s, respectively. Conclusions Ring-IT was identified with accuracy and speed by both low vision simulated subjects, and by patients with true limited visual capabilities. These tactile bottle neck ring adaptors can be used as an assistive low vision aid device and may increase eye drop regimen adherence in visually impaired patients.

Original languageEnglish (US)
Article numbere001462
JournalBMJ Open Ophthalmology
Volume8
Issue number1
DOIs
StatePublished - Dec 28 2023
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology

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