Technological progress has transformed many societal domains, yet individuals with visual impairments often face barriers interacting with digital systems not adapted to their sensory needs, resulting in social exclusion. This short course emphasizes the importance of accessible design in Human-Computer Interaction (HCI), advocating for participatory design that actively involves visually impaired users, in line with the principle “Nothing About Us Without Us.” The course combines theoretical and practical approaches to immerse participants in the challenges faced by visually impaired users, encouraging the development of accessible computational systems. It covers the historical evolution of disability inclusion, key accessibility concepts, assistive technologies, participatory design strategies, and real-world case studies. Targeted at HCI students and researchers without prerequisites, the course lasts three hours and requires specific assistive technology tools.