Looking at screens for extended periods can have negative effects on our physical health, particularly our eyes. Bright screen brightness and blue light emission from electronic devices can cause eye strain, dryness, and disrupted sleep patterns. To mitigate these effects, it's recommended to maintain high contrast settings, use night mode or adjust the color scheme to reduce blue light emission before bedtime, and take regular breaks to rest your eyes every 20 minutes. Proper positioning of screens, including distance from the viewer, glare reduction, and ergonomic setup of chairs and desks, can also help prevent eye strain and promote good posture. By taking these precautions, individuals can reduce their risk of developing computer vision syndrome and maintain healthy eyes for extended screen time.