The One Thing Every Smartphone User Should Know About Eye Health How Many hours do you spend looking at your smartphone each day? Most people underestimate their daily screen time. Modern life revolves around smartphone usage from early mornings to late nights. However, behind this convenience lies a hidden danger https://www.diigo.com/item/note/b2kvl/jta5?k=98c36c1c8bcf49ec071d42aba82986c0