Exploring preferred and actual lighting levels for reading for adults with visual impairment at a center for the blind

Abstract

Introduction

Light plays a crucial role in facilitating or hindering participation in reading. The purpose of this study is to examine the preferred lighting and actual lighting levels for reading for adults with visual impairment at a center for the blind.

Method

This mixed-methods study gathered reading acuity level and lighting preferences for reading for 18 adults with visual impairment. The researcher used the Warren Text Card to measure reading acuity, and participants identified the preferred lighting level for reading on the LuxIQ 2. A Lighting Inventory was used to record lighting at the site.

Findings

Preferred lighting levels varied for adults with visual impairment. Preferred lux ranged from 250–5000 and kelvin ranged from 3000–6500 degrees. Reading acuity significantly improved (<.01) with increased lighting (t = 3.441). The actual lighting levels at the center did not meet preferred lighting levels for reading.

Conclusion

Adults with visual impairment preferred increased levels of lighting for reading. As desired levels varied across participants, recommending customized lighting for each individual is optimal. Occupational therapists ideally should evaluate lighting and educate clients on how to increase lighting levels to the preferred level of lighting for reading to optimize reading performance.