Department of Psychology, Concordia University, Montréal, Canada.
CRIR/Centre de réadaptation Lethbridge-Layton-Mackay Réhabilitation Centre du Centre Intégré Universitaire de Santé et Services Sociaux (CIUSSS) Centre ouest de l'ile de Montréal, Montréal, Canada.
Ophthalmic Physiol Opt. 2021 Mar;41(2):281-294. doi: 10.1111/opo.12785. Epub 2021 Feb 2.
This study examined the effectiveness of the LuxIQ, the Apple iPad and a smart bulb in assessing optimal colour and illumination to facilitate reading in younger, older and visually impaired adults.
Participants read standardised texts at baseline (normal lighting/no device), then using the Apple iPad, LuxIQ and smart bulb, with their normal vision (20/20 condition) and using a simulated reduction in visual acuity/contrast sensitivity (20/80 condition). Visually impaired participants followed the same procedure used in the 20/80 condition.
There was a significant interaction between condition and device in younger, F(1.5, 43.51) = 30.41, p < 0.001, ω = 0.34 and older, F(1.5, 4.51) = 4.51, p = 0.03, ω = 0.05 adults with normal vision, and there was a significant effect of device, F(2, 58) = 5.95, p = 0.004, ω = 0.12 in visually impaired adults. In the 20/20 condition, age and colour predicted reading speed, F(3, 176) = 36.25, p < 0.001, Adj. R = 0.37, whereas age, lighting and colour predicted reading speed, F(3, 176) = 36.25, p < 0.001, Adj. R = 0.37 in the 20/80 condition. In the visual impairment condition, lighting, colour and impairment severity predicted reading speed, F(3, 85) = 10.10, p < 0.001, Adj. R = 0.24.
The clinical implications of this study are that reading speeds improve in individuals with low vision under improved lighting conditions, specifically, with higher levels of luminance and colour temperature. The effectiveness of the devices varied across groups; however, the LuxIQ was the only device to improve reading speeds from baseline in older adults with visual impairments.
本研究旨在评估 LuxIQ、苹果 iPad 和智能灯泡在评估优化色彩和照明以促进年轻、年长和视力障碍成年人阅读方面的有效性。
参与者在基线时（正常照明/无设备）阅读标准文本，然后使用苹果 iPad、LuxIQ 和智能灯泡，在正常视力（20/20 条件）和模拟视力下降（20/80 条件）下进行阅读。视力障碍参与者遵循与 20/80 条件相同的程序。
在年轻参与者中，条件和设备之间存在显著交互作用，F(1.5, 43.51)=30.41，p<0.001，ω=0.34，在年长参与者中，F(1.5, 4.51)=4.51，p=0.03，ω=0.05，在正常视力的成年人中，设备存在显著影响，F(2, 58)=5.95，p=0.004，ω=0.12，在视力障碍成年人中。在 20/20 条件下，年龄和颜色预测阅读速度，F(3, 176)=36.25，p<0.001，Adj. R=0.37，而在 20/80 条件下，年龄、照明和颜色预测阅读速度，F(3, 176)=36.25，p<0.001，Adj. R=0.37。在视力障碍条件下，照明、颜色和障碍严重程度预测阅读速度，F(3, 85)=10.10，p<0.001，Adj. R=0.24。
本研究的临床意义在于，在改善照明条件下，低视力个体的阅读速度会提高，具体而言，亮度和色温越高，阅读速度越快。不同群体之间设备的效果不同；然而，只有 LuxIQ 能够提高视力障碍老年人的阅读速度。
