A convergence insufficiency is when your eyes have a slight coordination problem. A lot of research shows a relationship between dyslexia and convergence difficulty. There are however simple exercises you can do at home, with a pencil, to improve convergence. This page will work together well with Core Exercises.
Convergence is your eyes ability to come together and focus on a single point for a sustained period of time. This is of course, exactly what your eyes need to do in order to read properly. It is quite common for dyslexic people to have a convergence insufficiency (see evidence).
If your eyes cannot maintain convergence while reading then this may make it difficult to track the words on the page. This would in turn cause tiredness and make it hard to maintain concentration.
The easy way to find out whether or not you have this problem is to go to your opticians and ask for an eye convergence test. This is not generally part of a standard eye examination, so you'll need to request one.
Improving your convergence ability is not a cure for dyslexia and will not improve your literacy skills. The only way to improve literacy is reading and writing.
However improving your convergence will make it easier for your eyes to work together. This in turn should make reading an easier and more comfortable process. However you still need to work on your literacy skills.
To perform these exercises you will need a pen or a pencil. The exercises are fundamentally about focusing on the tip of the pen.
It's difficult to say how long you should hold the pen in front of your face for, as everyone is different. Basically you want to feel that the muscles in your eyes have had a good workout.
It’s also difficult to say how long you should continue to do these exercises for. Again everyone is different. Just use your common sense if it makes the reading process easier you should definitely continue to do them.