The understanding that the brightness of indoor lighting is brighter and brighter is better is incorrect. Both too bright and dim lights are actually not good for the eyes, which also echoes the Chinese saying "too much is better than too much". Because:
1、 A light that is too bright can stimulate the contraction of the ciliary muscles in the human eye, causing the pupils to become smaller, resulting in a decrease in the amount of light entering the pupils. The same image reflected in the human eye remains the same due to the decrease in light entering.
2、 At the same time, too bright light can damage the retina and cause retinal detachment before the human eye undergoes physiological reactions. It can also form a shadow on visual cells that lasts for more than ten minutes (a bright spot can still exist in front of the eyes when looking at a very bright light source), which is one of the hazards caused by glare. Looking at a too bright light source for a long time can cause permanent damage to visual cells.
3、 A light source that is too bright is one of the reasons for glare, which not only fails to make the human eye better observe objects, but also affects the human eye's observation of objects.