Dr. Beatix Feigl and her colleagues developed a novel light therapy that selectively activates a particular type of photoreceptor cells, and in this episode, she discusses the results of a recent randomized controlled trial evaluating the efficacy of this melanopsin photoreceptor-directed light therapy on sleep and circadian rhythm, as well as motor behaviors. in people with Parkinson's disease.
https://www.michaeljfox.org/podcast/episode-22-investigating-light-therapy-sleep-and-motor-function-people-pd-beatrix-feigl