1. A device for providing extended reality or modified reality comprising a light source providing light to stimulate a retina of an eye of a user of the device, wherein the light is chosen to result in a physiological response in the eye of the user or a body of the user, wherein the device further comprises a processor configured with programmable instructions operative to allow the user with a same eye to see two images, a first moving image and a second image, such that the first image moves relative to the second image, wherein the movement of the first image is controlled by the processor configured with programmable instructions operative to cause the first image to move, wherein movement of the first image causes the eye of the user to move while a central portion of the retina of the eye of the user fixates on the first image, wherein a color or lack of color of the first image differs compared to a color of the second image, wherein the device projects the second image having light wavelengths that account for over 50% of light transmission from the light source that paints the retina of the user within a wavelength range of at least one of 480 nm+/−30 nm, 475 nm+/−20 nm, or 530 nm+/−20 nm, wherein the second image is projected having wavelengths within a range of 475 nm to 520 nm, wherein as the user fixates on the moving first image with the user's same eye, the second image paints light wavelengths within the wavelength range of at least one of 480 nm +/−30 nm, 475 nm+/−20 nm, or 530 nm+/−20 nm across or on different areas of a peripheral retina of the user's same eye, and wherein the eye of the user fixates on the first image as the first image moves relative to the second image.
