Two to ten minutes of bright sunlight exposure in the eyes around sunset can adjust retinal neuron sensitivity to mitigate artificial light effects on the dopamine system and sleep.

“But facing the sun around sunset, you don't actually have to see the sun cross down below the horizon, but facing the sun around that time for anywhere from 5 to 10 minutes or even less, even two to five minutes, can adjust the sensitivity of neurons in your retina that communicate light information to the brain and make it such that in the evening when you use artificial lights, they aren't going to have as much of a detrimental effect on your dopamine system and for impairing your sleep.”