Visual Impairment and Lighting: Comparing Guidelines and Illumination in Homes

Area of Science:

• Architecture
• Human-Computer Interaction
• Lighting Design

Background:

• Universal Design principles advocate for societal inclusion through accessible environments.
• Low vision rehabilitation highlights the critical role of domestic lighting for independence and quality of life.
• Existing lighting guidelines for visually impaired individuals vary in focus and application.

Purpose of the Study:

• To assess and analyze current low-vision lighting guidelines.
• To compare these guidelines with real-world conditions in Danish homes of individuals with vision loss.
• To identify gaps between theoretical recommendations and practical application in building design and rehabilitation.

Main Methods:

• Analysis of selected low-vision lighting guidelines focusing on illuminance, luminance, and the visual system.
• Field study involving 37 walk-along interviews and observations in participants' homes during dark hours (October 2023 - March 2024).
• Comparison of preliminary field findings with existing building design and low-vision rehabilitation guidelines.

Main Results:

• Preliminary findings indicate a divergence between established lighting guidelines and the actual lighting conditions and needs in Danish homes.
• The study highlights specific challenges faced by individuals with incipient vision loss in their home environments.
• Discrepancies were observed in illuminance, luminance, and visual system considerations between guidelines and practice.

Conclusions:

• Current lighting guidelines may not fully address the diverse needs of individuals with vision impairment in domestic settings.
• There is a need for better integration of low-vision considerations into architectural and construction practices.
• The research provides practical insights for improving home lighting design for enhanced accessibility and quality of life for the visually impaired.