How can I design something that aids those who have poor eye sight or are older and in care?

I was looking around for information on how I can design some graphic products that will aid those how have poor eyesight. I came across a website called ASHA which has a whole article on communicating with people with poor eye sight. This is what they said: 

Printed information presented or given to patients should be clutter-free and have sharp color contrast between text and background. Print materials should use a large font size (at least 16 points) with adequate spacing between lines. The information should be written in jargon-free, common vocabulary with well-constructed sentences in an active voice. Information that is important to remember should be bolded, bulleted, or highlighted so that it stands out. Avoid all-cap text.

This is an example of how colour blind people see this graph. Because all the lines look quite similar, it is very difficult to read and understand. This image was put online by someone who is colour blind. He suggests naming each line would make reading the graph a lot more easier. 

When designing my products I have to take into account the range of people I am designing for. This way, I can make sure that everyone will be able to understand the information I am putting across. 

Websites read:

http://www.asha.org/publications/leader/2010/100316/communicatingeffectivelywithelders/

http://www.aiga.org/typography-and-the-aging-eye/

http://waxy.org/2011/01/colorblind_leading_the_blind/