“Sleeping in contacts also messes with your eyes in the long run. We blink about 3 million times a year, and when you wear contacts, every blink against them creates a tiny abrasion, Assil says. Over time, the eyelid’s inner lining becomes rougher from all the rubbing, keeping it from reaching the same levels of lubrication. Add in the inflammation from wearing your contacts to bed, and it only exacerbates the problem.”

Read more of what Dr. Assil had to say about sleeping in contacts on Greatist