Improving Mealtime Experiences of People with Visual Impairments
SeungA Chung, Soobin Park, Sohyeon Park, Kyungyeon Lee, Uran Oh · 2021 · Proceedings of the 18th International Web for All Conference (W4A) · doi:10.1145/3430263.3452421
Summary
This paper investigates the mealtime challenges faced by people with visual impairments (PVI) and explores how assistive technology can support more independent dining experiences. While most accessibility research for PVI has focused on navigation and object recognition, this study addresses an underexplored area of daily living. The researchers conducted three studies: an online survey (n=91) of PVI in South Korea about their dining habits and difficulties, in-depth phone interviews with 8 PVI and 2 social workers who regularly assist them, and a design probe study (n=7) evaluating a VR prototype of a meal assistance system. The survey revealed that 61.5% of participants hardly ever eat out alone, primarily due to difficulties getting help from others (47.3%) and self-consciousness (36.3%). Key information needs differed between the start and middle of meals — before eating, participants wanted to know dish names, locations, and total number of dishes; during meals, they needed direction and distance to specific dishes, remaining food amounts, and temperature warnings. The interview study deepened these findings, revealing that all participants felt uncomfortable receiving help during meals, whether from distracting others, dealing with unfamiliar helpers, receiving excessive care, or experiencing inaccurate communication about food. Social workers confirmed they adapt assistance methods based on each person's duration of visual impairment, spatial awareness, and preferences.
Key findings
The survey found that 82.4% of PVI find identifying dishes difficult when there are too many dishes on the table, 33% struggle with similar-looking dishes or plates, and 47.3% memorize dish locations as their primary coping strategy. During meals, 49.5% reported frustration when they cannot find a desired dish, and 34.1% said remembering dish locations is difficult. The VR prototype tested three features: an overview command (providing dish count, arrangement using clock positions, and names), hand guidance (verbal clock-position directions combined with audio beeping that increases in frequency as the hand approaches the target dish), and food amount estimation (reporting remaining food in four levels). The overview feature was rated highest for satisfaction (5.71/7) and sufficiency (6.43/7), and was preferred by 6 of 7 participants as the most useful. Hand guidance received the highest satisfaction (6.0/7) among the three features, with participants particularly appreciating beeping guidance over verbal guidance alone — though some preferred haptic feedback for noisy environments. The food amount feature was considered helpful but participants wanted quantifiable units (pieces, grams, percentages) rather than ambiguous categories like "full" or "half." The system received a System Usability Scale score of 76.1 (grade B). Critically, participants raised social concerns about using the system in public: voice commands could disclose their disability, and conspicuous hardware could function as a stigma marker.
Relevance
This research addresses a significant gap in accessibility work by focusing on the social and practical dimensions of eating — an activity that is both a basic daily need and a major form of social interaction. For assistive technology designers, the study provides concrete design guidelines: meal assistance systems should offer both an overview mode (before eating) and targeted guidance mode (during eating), support multiple feedback modalities (verbal, audio beeping, haptic) to accommodate different environments and preferences, provide quantifiable rather than vague food descriptions, and critically, enable subtle interaction that does not draw attention or disclose disability status. The social findings are equally important — PVI avoid eating out alone not primarily because of physical difficulty but because of the social discomfort of needing help, suggesting that technology enabling independence at mealtimes could significantly expand social participation. The clock-face metaphor for describing spatial positions, while commonly used by social workers, was not universally understood by all PVI, highlighting the need for multiple spatial description options in assistive interfaces.
Tags: visual impairment · assistive technology · independent living · daily living · computer vision · voice interface · haptic technology · social accessibility