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Effects of Bright Light with Reduced Blue Light on Sleepiness on Rising: A Small Exploratory Study

机译：上升的蓝光减少对昏昏欲睡的影响：一项小型探索性研究

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Bright light therapy is a treatment modality for seasonal affective disorder and circadian rhythm disorders in which artificial light of 2,500 lux or higher at the eye is effective. Although short-wavelength visible light is more effective than long-wavelength visible light, it may be hazardous to the retina. Recently, light-emitting diodes (LEDs) have been used as the light source in bright light therapy apparatuses. We developed goggles for bright light therapy equipped with LEDs as the light source. The aim of this study was to examine the efficacy and safety of our goggles when emitting 10,000-lux light with its short-wavelength light content reduced by 30% or 50% (denoted as 30%-cut and 50%-cut light, respectively, henceforth). Six healthy young males participated in this study. They were administered no light, 50%-cut light, and 30%-cut light for 30 min early in the morning for 4 days each. Subjective sleepiness and sleep quality were evaluated by the Stanford Sleepiness Scale (SSS) and the Oguri–Shirakawa–Azumi sleep inventory MA version (OSA-MA), respectively. Subjective sleepiness evaluated by the SSS and the subscale of the OSA-MA significantly decreased with 30%-cut light compared with no light. Psychomotor performance evaluated by a calculation task improved with the 30%-cut light, although not significant after multiple comparisons were considered. No abnormality was found by ophthalmoscopy and the vision test. In conclusion, our goggles with 30%-cut light may be safe and have an awakening effect.
机译：亮光疗法是一种针对季节性情感障碍和昼夜节律障碍的治疗方法，其中对眼睛的2500 lux或更高的人造光有效。尽管短波长可见光比长波长可见光更有效，但它可能对视网膜有害。近来，发光二极管（LED）已经被用作亮光治疗设备中的光源。我们开发了用于以LED为光源的明亮光疗护目镜。这项研究的目的是检查我们的护目镜在发射10,000 lux的光时的功效和安全性，其短波长光含量减少30％或50％（分别表示为30％切割和50％切割的光） ，此后）。六名健康的年轻男性参加了这项研究。在清晨30分钟内不给他们光照，50％切割的光线和30％切割的光线，每次4天。主观嗜睡和睡眠质量分别通过斯坦福大学嗜睡量表（SSS）和小栗-白川-Azumi睡眠清单MA版本（OSA-MA）进行评估。通过SSS和OSA-MA的次级量表评估的主观嗜睡程度与30％切光相比明显降低。通过计算任务评估的精神运动性能在30％的切割光下得到了改善，尽管在进行多次比较后并不显着。检眼镜和视力检查未发现异常。总而言之，我们的30％切割光线的护目镜可能是安全的并具有唤醒作用。

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