A natural way to improve long-sight

As we grow older, we tend to suffer from long-sight, that is we can't see near things clearly but can view distant objects very clearly. To overcome this problem, I learn of a natural way to improve our long-sight. You just need to blend a few types of fruit and vegetables and drink it daily. After three months you will see the result, that is your long sight seems to go away. A Hongkong writer tried it and it worked for her.

Here are the things you need to blend together:
1 One medium English potato (peeled)
2 Half an apple (peeled)
3 One medium tomato (peeled)
4 Half piece of carrot (peeled)

Blend the above using a blender and drink it together with the fibre.