The Leo Angart book is a wonderful resource. There are many practical exercises,although the one which had the most benefit to me was -˜Energy Exercise'. It combines the powerful use of visualisation with the Chinese life giving energy of chi. It opened my eyes (literally as well as metaphorically) to the power of chi and helped improve my eyesight from -3.75 dioptres to less than 1 dioptre in both eyes.
The instructions are clearly explained, taking you through each step in a logical manner.
To aid comprehension there are also small images showing the ideal things that you should be doing at each stage. It was so easy that I only needed to read the instructions a few times before I had memorised the whole process and I could thus do the exercise whenever and wherever I wanted.
There is also much information about how the eye functions and specific exercises for various eye afflictions (such as astigmatism, myopia, hypermyopia, amblyopia, strabismus, etc.). It is therefore a practical and comprehensive tool for those looking to improve their eyesight naturally.