Effectiveness of <i>Virtual Baithak,</i> an mHealth intervention to improve eye health literacy for the older adults in India: a protocol for a randomised controlled trial

INTRODUCTION: for improving vision health and (2) Determine its effectiveness, feasibility and acceptability among the older adults. METHODS AND ANALYSIS: platform, which will be designed for this study using a participatory research approach to develop the content. The primary study outcomes are digital health literacy and vision health knowledge scores, measured at baseline and 14 months. The secondary outcomes include m-health technology acceptance and usage practices. A mixed-method process evaluation will be conducted to assess the intervention feasibility and implementation, including in-depth interviews with participants. The qualitative data will be thematically analysed to explore factors that promote or restrain the implementation. The inferential statistical quantitative analysis will be performed using linear mixed models. ETHICS AND DISSEMINATION: The study has been approved by the 'Institute Ethics Committee,' PGIMER, Chandigarh, India (PGI/IEC/2022/EIC000282 dated 18 February 2022). The results will be disseminated via presentations and/or publications at the national and international levels. TRIAL REGISTRATION NUMBER: CTRI/2023/02/049383, dated 1 February 2023.