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An optical element and imaging intervention device for light field modulation are disclosed. The optical element includes a lens substrate having a radial direction and a thickness direction perpendicular to the radial direction. A central visual region and a slow-light modulation region are formed on the lens substrate. The central visual region is formed in the middle of the lens substrate, and the slow-light modulation region is arranged around the central visual region. The slow-light modulation region includes multiple photonic crystals arranged in an array on the lens substrate to reduce the group velocity of light passing through the slow-light modulation region. This optical element can effectively control myopia.