The image is a screenshot of a document titled "Abstract" in Vietnamese. The abstract is about circadian rhythm disturbance, which is a common feature of many psychiatric disorders. It discusses light as the primary input to the circadian clock, with daytime light strengthening rhythms and night-time disrupting them. It mentions that habitual exposure has been shown to be an environmental risk factor for susceptibility to sleep disorders, physical activities, and mental health. The document also states that their performance was the largest study to examine environmental risk factors for susceptibility to sleep disorders, physical activities, and mental health. The document concludes with a table of participants' ages and genders.