Optom Vis Sci. 2020 Apr;97(4):257-264. doi: 10.1097/OPX.0000000000001499.
Lighting assessments are an important component of low-vision rehabilitation but are rarely studied systematically. Our study indicates that preferred lighting levels support improvements in reading ease and enjoyment, independently of the evaluation technique. To determine preferred illumination level and color temperature, the LuxIQ is quicker to administer and covers broad options of settings.
The purpose of this study was to determine if preferred lighting, as assessed by the LuxIQ versus a standard lighting assessment, leads to better reading outcomes in individuals with low vision.
Preferred lighting was assessed at home with visually impaired persons (mean age, 75.3 years), using the LuxIQ (n = 18) or a standard technique based on trying out light bulbs of various intensity and color temperature (n = 16). Maximum reading speed and reading acuity were measured before the lighting intervention and then under the preferred lighting conditions. A 1-month telephone follow-up evaluated the (1) compliance with the lighting recommendations and, for those who modified their lighting, (2) their level of satisfaction with the length of reading time and eye strain felt during reading.
Compared with usual lighting conditions, most participants preferred a cooler temperature at a higher illuminance level. Neither lighting assessment type appeared to lead to substantially improved objectively measurable reading outcomes. At the 1-month follow-up, 56% of the participants had modified their lighting, having a significant effect on satisfaction (P < .01), independent of assessment method. Of 18 respondents, 16 (87.5%) mentioned that reading was more enjoyable or easier with the lighting modifications.
Both lighting assessment methods lead to comparable results, but the LuxIQ is easier and faster to use. More research is needed to determine whether the LuxIQ is suitable to be incorporated into clinical practice.
照明评估是低视力康复的一个重要组成部分，但很少被系统地研究。我们的研究表明，无论评估技术如何，偏好的照明水平都能独立提高阅读的舒适度和愉悦感。为了确定偏好的照明水平和色温，LuxIQ 更便于管理，并涵盖了广泛的设置选项。
本研究旨在确定通过 LuxIQ 与标准照明评估来评估偏好照明是否会导致低视力个体的阅读效果更好。
使用 LuxIQ（n = 18）或基于不同强度和色温灯泡试用的标准技术（n = 16）在家中对视力障碍者进行偏好照明评估（平均年龄 75.3 岁）。在照明干预之前和之后测量最大阅读速度和阅读视力。为期 1 个月的电话随访评估了（1）对照明建议的遵守情况，以及对于那些修改照明的人，（2）他们对阅读时间长度和阅读时眼睛疲劳的满意度。
与通常的照明条件相比，大多数参与者更喜欢更冷的温度和更高的照度水平。两种照明评估类型似乎都没有显著提高可客观测量的阅读效果。在 1 个月的随访中，56%的参与者修改了他们的照明，这对满意度有显著影响（P <.01），与评估方法无关。在 18 名受访者中，有 16 名（87.5%）表示，通过照明修改，阅读更愉快或更容易。
两种照明评估方法都能得出类似的结果，但 LuxIQ 更简单、更快捷。需要进一步研究以确定 LuxIQ 是否适合纳入临床实践。
