'Contrary to popular belief, deteriorating vision is primarily a side effect of modern lifestyle. Aging does not automatically mean you will lose your eyesight. The key is to properly nourish your eyes throughout the years, and avoid chronic eye strain.
For example, I noticed my near vision started to deteriorate around 20 years ago, but after applying these principles, at 61, I don't wear reading glasses unless I need to see small print and there is very little light.
Staring at a computer screen for hours on end is a common cause of blurred vision, short-sightedness, and other eye problems.'