Which one is better for your eyes, white light or yellow light?

White light is better for the eyes.

Color temperature (colo(u)r temperature) is a characteristic of visible light that has important applications in photography, video, publishing and other fields. The color temperature of a light source is determined by comparing its color to a theoretical thermal blackbody radiator. The Kelvin temperature at which a thermal blackbody radiator matches the color of a light source is the color temperature of that light source, which is directly related to Planck's law of blackbody radiation. Color temperature is the most common indicator of the spectral quality of a light source. Generally expressed by Tc. Color temperature is defined by an absolute black body. When the radiation of the absolute black body is exactly the same as the radiation of the light source in the visible region, the temperature of the black body is called the color temperature of the light source. The characteristic of low color temperature light sources is that there is relatively more red radiation in the energy distribution, which is usually called "warm light". When the color temperature is increased, the proportion of blue radiation in the energy distribution increases, which is usually called "cold light". The color temperatures of some commonly used light sources are: standard candlepower is 1930K (Kelvin temperature unit); tungsten lamp is 2760-2900K; fluorescent lamp is 6400K; flash lamp is 3800K; noon sunlight is 5000K; electronic flash lamp is 6000K; blue sky is 10000K.