Garreth W. Tigwell

Accessibility in Extended Reality: A Systematic Review of Accessibility Research on Extended Reality Published in the ACM Digital Library From 2000 to 2025

Extended Reality (XR), including Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR), has become a powerful paradigm for human–computer interaction, offering new opportunities to support accessibility for people with disabilities and older adults. However, the rapidly growing body of XR accessibility r...

Exploring How Purpose of Activities Shapes Older Adults’ Engagement with Extended Reality

ColorA11Y: Enhancing Creative Design Workflows with Just-in-Time Color Accessibility Recommendations

Effective color contrast in visual design is essential for content accessibility. While existing tools can identify contrast issues, they often operate in isolation from design workflows or are used as an afterthought. We present ColorA11Y, a system that supports designers in creating accessible content by providing ju...

How University Disability Services Professionals Write Image Descriptions for HCI Figures Using Generative AI

Findings show that alt text written solely by DSO professionals has lower quality than alt text written with AI assistance, while AI assistance also helped DSO professionals write alt text more quickly and with greater confidence; however, they reported inefficacy in interactions with the AI.