★ Enjoy modern lighting, avoid adverse effects of lighting on human health, experts warn, and when you use indoor lighting must, should control the lighting to five principles:
1. use a wide range of lighting, light should illuminate the whole desktop;
2. the introduction of uniform lighting, illumination of each part to be consistent;
3. maintain a constant lighting, light sources when the dark or blinking when not;
4. maintain adequate lighting;
5. Lastly, careful not to direct light to the eyes.