Hours a Day in Front of a Computer?

A recently published report cites the fact that ~35% of people born 1965-1996 and now living in developed countries spend at least 9 hours a day in front of digital devices.   Such intense use of digital devices has been found to have undesirable effects on sleep quality, alertness during waking hours and also fatigue, headaches, muscular, skeletal and visual strain.

When an eye doctor takes an ophthalmoscope in his hand and holds it close to your eyes to examine your retina, he/she can see y...