The Purpose of the article I read was to be informative about the finding of UCL researchers in regards to exposure to red light. This is an issue because most people see their eyesight diminish with age with the only solution being glasses or contacts. 20 people participated in morning exposure of deep red light for 3 minutes between 8-9am. they saw 17% - 20% improvements in color vision. The same trial took place but the exposure happened between 12pm - 1 pm and there was 0 improvement.