When not treated, it might lead to vision losses. Do this for about 30 minutes and then gently massage your dry eyes with comfortable towel.
It varies from individuals so that you may how much sleep you'd like (try 7-9 hours). If this layer dries out, the lens starts feeling like sand. http://lovelygenekindergarten.com/__media__/js/netsoltrademark.php?d=e%3D%26no%3D0%26IN%3D283190https%3A%2F%2Flearning-pace.com%2Fforums%2Fusers%2Fwilburnmcdonnell%2F