During winter, when there’s less daylight, some people experience a type of type of depression known as Seasonal Affective Disorder, or the “winter blues.”

Now, researchers say winter may also have an impact on children’s vision.

A new study found the vision of nearsighted children deteriorated faster when days were shortest, and more slowly during the summer months.

The lead author says it’s most likely the light exposure that causes reduced progression of nearsightedness during periods with longer days.

Children’s vision may deteriorate during winter months