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The 21st century is an age of aging population. in an aging design The more important it is. Their signs will develop as the body ages changes, and is particularly common in vision.Vision in old age decreases due to the aging of human organs and other reasons.Visual ability, color resolution, and reduced adaptability to bright mutations.Force. This reduces image resolution and is difficult to distinguish between dark and weak.A decrease in color difference environment and visual light adaptation and dark adaptability But the ability to see light and dark in life is especially important, going to the toilet at night.The rapid brightness .
Chengdu University of Technology