The muscles in your eyes are just like the muscles anywhere else in your body, and if you don’t work them then they will deteriorate over time.

One of the most common reasons for poor eyesight is that the muscles attached to the lens aren’t strong enough to do their job properly. This can be because of eye strain or even because of a reliance on glasses or contact lenses.  Either way you can learn how to improve eyesight simply by reading publications by William H Bates.  This guy who has actually been dead over 7 decades has produced the most comprehensive guide on natural vision improvement out there and is well worth a read for anyone looking to improve their eyesight.