The image is an abstract from a research paper discussing circadian rhythm disorders, specifically focusing on their association with various psychiatric conditions. The abstract mentions that circadian rhythm disorders are a common feature of many psychiatric disorders and that light exposure plays a crucial role in maintaining normal circadian rhythms. It also highlights the importance of habitual light exposure for preventing certain psychiatric conditions, such as PTSD, bipolar disorder, and depression. The abstract mentions that greater night-time light exposure was associated with increased anxiety, depression, and self-harm behaviors. The study also notes that independent daytime light exposure was associated with increased anxiety, depression, and self-harm behaviors. The abstract concludes by highlighting the importance of understanding the impact of light exposure on mental health and the need for further research into this area.