Eccentric Visor: A User-Centered Mobile Application to Facilitate Reading and Vision Training for Individuals With Central Vision Loss

Introduction: Central vision loss significantly impairs reading ability, and few technological tools aim to support both reading and eccentric viewing training. This study aimed to develop a user-centered mobile application, Eccentric Visor, to enhance reading accessibility and support eccentric vision training using evidence-based methods and computer vision techniques. Methods: The application was developed through an iterative, user-centered co-design process to produce a Minimum Viable Product (MVP). Key features include customizable text presentation and a visual fixation marker to support the steady eye strategy. Usability and acceptability were evaluated through structured questionnaires and open-ended feedback from individuals with central vision loss and low vision rehabilitation professionals. Results: The MVP incorporated reading enhancement strategies such as font and contrast adjustments and dynamic scrolling text. Most users found the application easy to use and effective for practicing eccentric viewing. All professionals indicated they would recommend the app in clinical contexts, highlighting its utility as both a reading aid and a potential training tool. Conclusion: Eccentric Visor shows promise as a digital resource that may support both accessible reading and eccentric viewing training. Preliminary findings suggest the app is usable, adaptable, and well-received by users and clinicians. It may also serve as a platform for future enhancements and formal efficacy studies. Implications for practitioners: By integrating customizable features with evidence-based design, Eccentric Visor may offer rehabilitation professionals a practical tool to support independent reading and ongoing visual training.