People with sleep problems often find it difficult to go into night mode because the mind and body are too active. Overexposure to blue light at night is a major cause of this problem - it stimulates the brain and suppresses the body's melatonin production. Wearing Chrono Chrome's virtual darkness eyewear is an obvious solution.

Insomnia
Insomnia is an increasing problem in the population and the cause of many health problems. Virtual darkness eyewear promotes sleep and helps people suffering from insomnia (Burkhart et al. 2009). 

Delayed sleep phase disorder 
The first report on the effect of virtual darkness eyewear for people with delayed sleep phase disorder was recently published by Esaki et al. 2016. In this open label trial the sleep onset time was advanced by more than 2 hours after two weeks of treatment.